diff --git a/Classes/DPPPropertyAttribute.m b/Classes/DPPPropertyAttribute.m
index 58a8fd2..25c4233 100644
--- a/Classes/DPPPropertyAttribute.m
+++ b/Classes/DPPPropertyAttribute.m
@@ -26,7 +26,7 @@ - (id) initWithClass:(id)class propertyName:(NSString*)propertyName
 		return self;
     
     const char *p = attrs;
-    char retentionMethod;
+    char retentionMethod = 0;
     BOOL atomic = YES;
     BOOL weak = NO;
 	do
diff --git a/Classes/NSObject+DProperty.m b/Classes/NSObject+DProperty.m
index 79dc9e0..800dd6b 100644
--- a/Classes/NSObject+DProperty.m
+++ b/Classes/NSObject+DProperty.m
@@ -208,12 +208,10 @@ + (NSMutableDictionary*)DPP_keysDictionary
 {
     NSMutableDictionary *dict = objc_getAssociatedObject(self, &DPPPropertyDictionaryKey);
     if(dict == nil){
-        @synchronized(dict){
-            dict = objc_getAssociatedObject(self, &DPPPropertyDictionaryKey);
-            if(dict == nil){
-                dict = [NSMutableDictionary dictionary];
-                self.DPP_keysDictionary = dict;
-            }
+        dict = objc_getAssociatedObject(self, &DPPPropertyDictionaryKey);
+        if(dict == nil){
+            dict = [NSMutableDictionary dictionary];
+            self.DPP_keysDictionary = dict;
         }
     }
     return dict;