diff --git a/PNObject.podspec b/PNObject.podspec
index c5a8240..afd4d82 100644
--- a/PNObject.podspec
+++ b/PNObject.podspec
@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
 s.name             = 'PNObject'
-s.version          = '2.4.3'
+s.version          = '2.4.4'
 s.summary          = 'PNObject is a simple replica of the more complex ParseObject'
 
 
diff --git a/PNObject/Classes/PNObjectConfig.m b/PNObject/Classes/PNObjectConfig.m
index e107df0..1ed05f9 100644
--- a/PNObject/Classes/PNObjectConfig.m
+++ b/PNObject/Classes/PNObjectConfig.m
@@ -836,7 +836,7 @@ static bool isFirstAccess = YES;
         case OAuthModeClientCredential:{
             
             AFOAuthCredential *credential = [AFOAuthCredential retrieveCredentialWithIdentifier:PNObjectServiceClientCredentialIdentifier];
-            if (!credential || (credential && ![credential isExpired])) {
+            if (!credential || (credential && [credential isExpired])) {
                 return NO;
             }
             [_managerHttpRequestSerializer setAuthorizationHeaderFieldWithCredential:credential];
@@ -847,7 +847,7 @@ static bool isFirstAccess = YES;
         case OAuthModePassword:{
             
             AFOAuthCredential *credential = [AFOAuthCredential retrieveCredentialWithIdentifier:PNObjectServiceUserCredentialIdentifier];
-            if (!credential || (credential && ![credential isExpired])) {
+            if (!credential || (credential && [credential isExpired])) {
                 return NO;
             }
             [_managerHttpRequestSerializer setAuthorizationHeaderFieldWithCredential:credential];