diff --git a/src/key.js b/src/key.js
index b2feeb40..37575519 100644
--- a/src/key.js
+++ b/src/key.js
@@ -1643,7 +1643,7 @@ function isDataExpired(keyPacket, signature, date=new Date()) {
   const normDate = util.normalizeDate(date);
   if (normDate !== null) {
     const expirationTime = getExpirationTime(keyPacket, signature);
-    return !(keyPacket.created <= normDate && normDate <= expirationTime) ||
+    return !(normDate <= expirationTime) ||
       (signature && signature.isExpired(date));
   }
   return false;
diff --git a/src/packet/signature.js b/src/packet/signature.js
index 249e3a6e..c5974c17 100644
--- a/src/packet/signature.js
+++ b/src/packet/signature.js
@@ -727,7 +727,7 @@ Signature.prototype.isExpired = function (date=new Date()) {
   const normDate = util.normalizeDate(date);
   if (normDate !== null) {
     const expirationTime = this.getExpirationTime();
-    return !(this.created <= normDate && normDate <= expirationTime);
+    return !(normDate <= expirationTime);
   }
   return false;
 };