diff --git a/src/map/script.c b/src/map/script.c
index 7ee0be057d..be9adeae64 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -13945,7 +13945,7 @@ BUILDIN_FUNC(replacestr)
 
 	if(script_hasdata(st, 6)) {
 		count = script_getnum(st, 6);
-		if(!count) {
+		if(count == 0) {
 			ShowError("script:replacestr: Invalid count value. Expected int got string\n");
 			st->state = END;
 			return 1;