diff --git a/src/char/inter.c b/src/char/inter.c
index cb136bcb89..0fc3e9847c 100644
--- a/src/char/inter.c
+++ b/src/char/inter.c
@@ -915,7 +915,6 @@ int mapif_parse_broadcast(int fd)
 int mapif_parse_WisRequest(int fd)
 {
 	struct WisData* wd;
-	static int wisid = 0;
 	char name[NAME_LENGTH];
 	char esc_name[NAME_LENGTH*2+1];// escaped name
 	char* data;
@@ -964,6 +963,7 @@ int mapif_parse_WisRequest(int fd)
 		}
 		else
 		{
+			static int wisid = 0;
 
 			CREATE(wd, struct WisData, 1);
 
diff --git a/src/common/network.c b/src/common/network.c
index 1f1621363b..68394dcc1a 100644
--- a/src/common/network.c
+++ b/src/common/network.c
@@ -68,13 +68,12 @@ void network_init(){
 	
 	for(i = 0; i < MAXCONN; i++){
 		s = &g_Session[i];
-		
+
 		s->type = NST_FREE;
 		s->disconnect_in_progress = false;
-				
 	}
 	
-	// Initialize the correspondig event dispatcher
+	// Initialize the corresponding event dispatcher
 	evdp_init();
 
 	//
@@ -317,16 +316,18 @@ void network_disconnect(int32 fd){
 
 int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 	SESSION *s;
-	int optval, fd;
+	int fd;
+#ifdef SO_REUSEADDR
+	int optval;
+#endif
 
 #if !defined(ENABLE_IPV6)
 	if(v6 == true){
-		 ShowError("network_addlistener(%c, '%s', %u):  this release has no IPV6 support.\n",  (v6==true?'t':'f'),  addr, port);
+		 ShowError("network_addlistener(%c, '%s', %u):  this release has no IPV6 support.\n", (v6==true?'t':'f'), addr, port);
 		 return -1;
 	}
 #endif
 
-
 #ifdef ENABLE_IPV6
 	if(v6 == true)
 		fd = socket(AF_INET6, SOCK_STREAM, 0);
@@ -336,7 +337,7 @@ int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 
 	// Error?
 	if(fd == -1){
-		ShowError("network_addlistener(%c, '%s', %u):  socket() failed (errno: %u / %s)\n",  (v6==true?'t':'f'),  addr, port,    errno, strerror(errno));
+		ShowError("network_addlistener(%c, '%s', %u):  socket() failed (errno: %u / %s)\n",  (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 		return -1;
 	}
 	
@@ -346,16 +347,14 @@ int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 		close(fd);
 		return -1;
 	}
-	
-	
+
 	s = &g_Session[fd];
 	if(s->type != NST_FREE){ // additional checks.. :)
-			ShowError("network_addlistener(%c, '%s', %u): failed, got fd #%u which is already in use in local session table?!\n", (v6==true?'t':'f'),  addr, port, fd);
+			ShowError("network_addlistener(%c, '%s', %u): failed, got fd #%u which is already in use in local session table?!\n", (v6==true?'t':'f'), addr, port, fd);
 			close(fd);
 			return -1;
 	}
-	
-	
+
 	// Fill ip addr structs
 #ifdef ENABLE_IPV6
 	if(v6 == true){
@@ -363,11 +362,10 @@ int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 		s->addr.v6.sin6_family = AF_INET6;
 		s->addr.v6.sin6_port = htons(port);
 		if(inet_pton(AF_INET6, addr, &s->addr.v6.sin6_addr) != 1){
-			ShowError("network_addlistener(%c, '%s', %u): failed to parse the given IPV6 address.\n",  (v6==true?'t':'f'),  addr, port);
+			ShowError("network_addlistener(%c, '%s', %u): failed to parse the given IPV6 address.\n", (v6==true?'t':'f'), addr, port);
 			close(fd);
 			return -1;
 		}
-		
 	}else{
 #endif
 		memset(&s->addr.v4, 0x00, sizeof(s->addr.v4));
@@ -377,12 +375,11 @@ int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 #ifdef ENABLE_IPV6
 	}
 #endif
-		 
 
 	// if OS has support for SO_REUSEADDR, apply the flag
 	// so the address could be used when there're still time_wait sockets outstanding from previous application run.
 #ifdef SO_REUSEADDR
-	optval=1;
+	optval = 1;
 	setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
 #endif
 
@@ -390,14 +387,14 @@ int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 #ifdef ENABLE_IPV6
 	if(v6 == true){
 		if( bind(fd, (struct sockaddr*)&s->addr.v6,  sizeof(s->addr.v6)) == -1) {
-			ShowError("network_addlistener(%c, '%s', %u): bind failed (errno: %u / %s)\n",  (v6==true?'t':'f'),  addr, port, errno, strerror(errno));
+			ShowError("network_addlistener(%c, '%s', %u): bind failed (errno: %u / %s)\n", (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 			close(fd);
 			return -1;
 		}
 	}else{
 #endif
 		if( bind(fd, (struct sockaddr*)&s->addr.v4,  sizeof(s->addr.v4)) == -1) {
-            ShowError("network_addlistener(%c, '%s', %u): bind failed (errno: %u / %s)\n",  (v6==true?'t':'f'),  addr, port, errno, strerror(errno));
+            ShowError("network_addlistener(%c, '%s', %u): bind failed (errno: %u / %s)\n", (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 			close(fd);
 			return -1;
 		}		
@@ -406,7 +403,7 @@ int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 #endif
 
 	if( listen(fd, l_ListenBacklog) == -1){
-		ShowError("network_addlistener(%c, '%s', %u): listen failed (errno: %u / %s)\n",  (v6==true?'t':'f'),  addr, port, errno, strerror(errno));
+		ShowError("network_addlistener(%c, '%s', %u): listen failed (errno: %u / %s)\n", (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 		close(fd);
 		return -1;
 	}
@@ -414,20 +411,18 @@ int32 network_addlistener(bool v6,  const char *addr,  uint16 port){
 
 	// Set to nonblock!
 	if(_setnonblock(fd) == false){
-		ShowError("network_addlistener(%c, '%s', %u): cannot set to nonblock (errno: %u / %s)\n",  (v6==true?'t':'f'),  addr, port, errno, strerror(errno));
+		ShowError("network_addlistener(%c, '%s', %u): cannot set to nonblock (errno: %u / %s)\n", (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 		close(fd);
 		return -1;
 	}	
 
-
 	// Rgister @ evdp.
 	if( evdp_addlistener(fd, &s->evdp_data) != true){
-		ShowError("network_addlistener(%c, '%s', %u): eventdispatcher subsystem returned an error.\n",  (v6==true?'t':'f'),  addr, port);
+		ShowError("network_addlistener(%c, '%s', %u): eventdispatcher subsystem returned an error.\n", (v6==true?'t':'f'), addr, port);
 		close(fd);
 		return -1;
 	}
-	
-	
+
 	// Apply flags on Session array for this conneciton.
 	if(v6 == true)	s->v6 = true;
 	else			s->v6 = false;
@@ -507,8 +502,11 @@ int32 network_connect(bool v6,
                         void (*onConnectionLooseHandler)(int32 fd)
 ){
 	register SESSION *s;
-	int32 fd, optval, ret;
+	int32 fd, ret;
 	struct sockaddr_in ip4;
+#ifdef SO_REUSEADDR
+	int optval;
+#endif
 #ifdef ENABLE_IPV6
 	struct sockaddr_in6 ip6;
 #endif
@@ -523,19 +521,18 @@ int32 network_connect(bool v6,
 #ifndef ENABLE_IPV6
 	// check..
 	if(v6 == true){
-		ShowError("network_connect(%c, '%s', %u...): tried to create an ipv6 connection, IPV6 is not supported in this release.\n", (v6==true?'t':'f'),  addr, port);
+		ShowError("network_connect(%c, '%s', %u...): tried to create an ipv6 connection, IPV6 is not supported in this release.\n", (v6==true?'t':'f'), addr, port);
 		return -1;
 	}
 #endif
 
 	// check connection limits.
 	if(fd >= MAXCONN){
-		ShowError("network_connect(%c, '%s', %u...): cannot create new connection, exceeeds more than supported connections (%u)\n", (v6==true?'t':'f'),  addr, port );
+		ShowError("network_connect(%c, '%s', %u...): cannot create new connection, exceeeds more than supported connections (%u)\n", (v6==true?'t':'f'), addr, port );
 		close(fd);
 		return -1;
 	}
 
-	
 	// Originating IP/Port pair given ?
 	if(from_addr != NULL && *from_addr != 0){
 		//.. 
@@ -543,7 +540,7 @@ int32 network_connect(bool v6,
 	    optval=1;
 	    setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
 		#endif
-		
+
 		#ifdef ENABLE_IPV6
 		if(v6 == true){
 			memset(&ip6, 0x00, sizeof(ip6));
@@ -551,16 +548,16 @@ int32 network_connect(bool v6,
 			ip6.sin6_port = htons(from_port);
 			
 			if(inet_pton(AF_INET6, from_addr, &ip6.sin6_addr) != 1){
-				ShowError("network_connect(%c, '%s', %u...): cannot parse originating (from) IPV6 address (errno: %u / %s)\n", (v6==true?'t':'f'),  addr, port, errno, strerror(errno));
+				ShowError("network_connect(%c, '%s', %u...): cannot parse originating (from) IPV6 address (errno: %u / %s)\n", (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 				close(fd);
 				return -1;
  			}
-		
+
  			ret = bind(fd, (struct sockaddr*)&ip6, sizeof(ip6));
 		}else{
 		#endif
 			memset(&ip4, 0x00, sizeof(ip4));
-			
+
 			ip4.sin_family = AF_INET;
 			ip4.sin_port = htons(from_port);
 			ip4.sin_addr.s_addr = inet_addr(from_addr);
@@ -570,11 +567,10 @@ int32 network_connect(bool v6,
 		#endif
 		
 	}
-	
 
 	// Set non block
 	if(_setnonblock(fd) == false){
-		ShowError("network_connect(%c, '%s', %u...): cannot set socket to nonblocking (errno: %u / %s)\n", (v6==true?'t':'f'),  addr, port, errno, strerror(errno));
+		ShowError("network_connect(%c, '%s', %u...): cannot set socket to nonblocking (errno: %u / %s)\n", (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 		close(fd);
 		return -1;
 	}
@@ -588,7 +584,7 @@ int32 network_connect(bool v6,
 		ip6.sin6_port = htons(port);
 		
 		if(inet_pton(AF_INET6, addr, &ip6.sin6_addr) != 1){
-			 ShowError("network_connect(%c, '%s', %u...): cannot parse destination IPV6 address (errno: %u / %s)\n", (v6==true?'t':'f'),  addr, port, errno, strerror(errno));
+			 ShowError("network_connect(%c, '%s', %u...): cannot parse destination IPV6 address (errno: %u / %s)\n", (v6==true?'t':'f'), addr, port, errno, strerror(errno));
 			 close(fd);
 			 return -1;
 		}
@@ -604,7 +600,6 @@ int32 network_connect(bool v6,
 	}
 #endif
 
-
 	// Assign Session..
 	s = &g_Session[fd];
 	s->type = NST_OUTGOING;
@@ -622,7 +617,7 @@ int32 network_connect(bool v6,
 	
 	// Register @ EVDP. as outgoing (see doc of the function)
 	if(evdp_addconnecting(fd, &s->evdp_data) == false){
-		ShowError("network_connect(%c, '%s', %u...): eventdispatcher subsystem returned an error.\n", (v6==true?'t':'f'),  addr, port);
+		ShowError("network_connect(%c, '%s', %u...): eventdispatcher subsystem returned an error.\n", (v6==true?'t':'f'), addr, port);
 		
 		// cleanup session x.x.. 
 		s->type = NST_FREE;
@@ -635,7 +630,6 @@ int32 network_connect(bool v6,
 		return -1;
 	}
 
-
 #ifdef ENABLE_IPV6
 	if(v6 == true)
 		ret = connect(fd, (struct sockaddr*)&ip6, sizeof(ip6));
@@ -660,7 +654,6 @@ int32 network_connect(bool v6,
 		return -1;
 	}
 
-
 	// ! The Info Message :~D
 	ShowStatus("network_connect fd#%u (%s:%u) in progress.. \n", fd, addr, port);
 
diff --git a/src/common/strlib.c b/src/common/strlib.c
index 97b6b19a41..c752a43fc5 100644
--- a/src/common/strlib.c
+++ b/src/common/strlib.c
@@ -155,14 +155,15 @@ char* trim(char* str)
 // that pointer with the returned value, since the original pointer must be
 // deallocated using the same allocator with which it was allocated.  The return
 // value must NOT be deallocated using free() etc.
-char *trim2(char *str,char flag){
-	char *end;
-	if(flag&1){ // Trim leading space
+char *trim2(char *str,char flag) {
+	if(flag&1) { // Trim leading space
 		while(isspace(*str)) str++;
 		if(*str == 0)  // All spaces?
 			return str;
 	}
-	if(flag&2){ // Trim trailing space
+	if(flag&2) { // Trim trailing space
+		char *end;
+
 		end = str + strlen(str) - 1;
 		while(end > str && isspace(*end)) end--;
 		*(end+1) = 0; // Write new null terminator
diff --git a/src/map/instance.c b/src/map/instance.c
index 2a54f08794..df87ca2e56 100644
--- a/src/map/instance.c
+++ b/src/map/instance.c
@@ -407,7 +407,7 @@ int instance_destroy(short instance_id)
 {
 	struct instance_data *im;
 	struct party_data *p;
-	int i, type = 0, count = 0;
+	int i, type = 0;
 	unsigned int now = (unsigned int)time(NULL);
 
 	if(instance_id <= 0 || instance_id > MAX_INSTANCE_DATA)
@@ -447,7 +447,7 @@ int instance_destroy(short instance_id)
 			type = 3;
 
 		for(i = 0; i < MAX_MAP_PER_INSTANCE; i++)
-			count += map_delinstancemap(im->map[i].m);
+			map_delinstancemap(im->map[i].m);
 	}
 
 	if(im->keep_timer != -1) {
diff --git a/src/map/npc.c b/src/map/npc.c
index fdce6df0e7..3955dfb973 100644
--- a/src/map/npc.c
+++ b/src/map/npc.c
@@ -2414,12 +2414,11 @@ static const char* npc_parse_shop(char* w1, char* w2, char* w3, char* w4, const
 
 	switch(type) {
 		case ITEMSHOP: {
-			struct item_data* tmp;
 			if (sscanf(p,",%d:%d,",&nameid,&is_discount) < 1) {
 				ShowError("npc_parse_shop: Invalid item cost definition in file '%s', line '%d'. Ignoring the rest of the line...\n * w1=%s\n * w2=%s\n * w3=%s\n * w4=%s\n", filepath, strline(buffer,start-buffer), w1, w2, w3, w4);
 				return strchr(start,'\n'); // skip and continue
 			}
-			if ((tmp = itemdb_exists(nameid)) == NULL) {
+			if (itemdb_exists(nameid) == NULL) {
 				ShowWarning("npc_parse_shop: Invalid item ID cost in file '%s', line '%d' (id '%d').\n", filepath, strline(buffer,start-buffer), nameid);
 				return strchr(start,'\n'); // skip and continue
 			}
@@ -3339,7 +3338,7 @@ static const char* npc_parse_mob(char* w1, char* w2, char* w3, char* w4, const c
 		return strchr(start,'\n');// skip and continue
 	}
 
-	if( (mob.state.size < 0 || mob.state.size > 2) && size != -1 )
+	if( mob.state.size > 2 && size != -1 )
 	{
 		ShowError("npc_parse_mob: Invalid size number %d for mob ID %d (file '%s', line '%d').\n", mob.state.size, class_, filepath, strline(buffer, start - buffer));
 		return strchr(start, '\n');
@@ -3812,7 +3811,6 @@ void npc_parsesrcfile(const char* filepath, bool runOnInit)
 		// More info at http://unicode.org/faq/utf_bom.html#bom5 and http://en.wikipedia.org/wiki/Byte_order_mark#UTF-8
 		ShowError("npc_parsesrcfile: Detected unsupported UTF-8 BOM in file '%s'. Stopping (please consider using another character set).\n", filepath);
 		aFree(buffer);
-		fclose(fp);
 		return;
 	}
 
diff --git a/src/map/pet.c b/src/map/pet.c
index 33d4e58dde..a684e96c68 100644
--- a/src/map/pet.c
+++ b/src/map/pet.c
@@ -863,7 +863,7 @@ static int pet_ai_sub_hard(struct pet_data *pd, struct map_session_data *sd, uns
 		if (DIFF_TICK(tick, pd->ud.canmove_tick) < 0)
 			return 0; //Can't move yet.
 		pd->status.speed = (sd->battle_status.speed>>1);
-		if(pd->status.speed <= 0)
+		if(pd->status.speed == 0)
 			pd->status.speed = 1;
 		if (!unit_walktobl(&pd->bl, &sd->bl, 3, 0))
 			pet_randomwalk(pd,tick);
diff --git a/src/map/script.c b/src/map/script.c
index 7d919db227..0007b50d69 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -9464,7 +9464,7 @@ BUILDIN_FUNC(clone)
 	TBL_PC *sd, *msd=NULL;
 	int char_id,master_id=0,x,y, mode = 0, flag = 0, m;
 	unsigned int duration = 0;
-	const char *map,*event="";
+	const char *map,*event;
 
 	map=script_getstr(st,2);
 	x=script_getnum(st,3);
@@ -18054,7 +18054,7 @@ static int atcommand_cleanfloor_sub(struct block_list *bl, va_list ap)
 BUILDIN_FUNC(cleanmap)
 {
 	const char *map;
-	int16 m = -1;
+	int16 m;
 	int16 x0 = 0, y0 = 0, x1 = 0, y1 = 0;
 
 	map = script_getstr(st, 2);