diff --git a/cocos2dx/cocoa/CCDictionary.cpp b/cocos2dx/cocoa/CCDictionary.cpp
index 2265d85540..64a0c11fd6 100644
--- a/cocos2dx/cocoa/CCDictionary.cpp
+++ b/cocos2dx/cocoa/CCDictionary.cpp
@@ -91,8 +91,11 @@ CCArray* CCDictionary::allKeysForObject(CCObject* object)
 
 CCObject* CCDictionary::objectForKey(const std::string& key)
 {
-    if (m_eDictType == kCCDictUnknown && m_eDictType == kCCDictUnknown) return NULL;
-    CCAssert(m_eDictType == kCCDictStr, "this dictionary does not use string as key.");
+    if (m_eDictType != kCCDictStr)
+    {
+        CCAssert(m_eDictType == kCCDictStr, "this dictionary does not use string as key.");
+        return NULL;
+    }
 
     CCObject* pRetObject = NULL;
     CCDictElement *pElement = NULL;
@@ -106,8 +109,11 @@ CCObject* CCDictionary::objectForKey(const std::string& key)
 
 CCObject* CCDictionary::objectForKey(int key)
 {
-    if (m_eDictType == kCCDictUnknown && m_eDictType == kCCDictUnknown) return NULL;
-    CCAssert(m_eDictType == kCCDictInt, "this dictionary does not use integer as key.");
+    if (m_eDictType != kCCDictInt)
+    {
+        CCAssert(m_eDictType == kCCDictInt, "this dictionary does not use integer as key.");
+        return NULL;
+    }
 
     CCObject* pRetObject = NULL;
     CCDictElement *pElement = NULL;
diff --git a/cocos2dx/platform/win32/CCImage.cpp b/cocos2dx/platform/win32/CCImage.cpp
index 27d0b69468..c339963aa0 100644
--- a/cocos2dx/platform/win32/CCImage.cpp
+++ b/cocos2dx/platform/win32/CCImage.cpp
@@ -126,8 +126,8 @@ public:
             }
             GetObjectA(m_hFont,  sizeof(tOldFont), &tOldFont);
 
-            if (tOldFont.lfHeight == tNewFont.lfHeight
-                && ! strcpy(tOldFont.lfFaceName, tNewFont.lfFaceName))
+            if (tOldFont.lfHeight == tNewFont.lfHeight &&
+                !strcmp(tOldFont.lfFaceName, tNewFont.lfFaceName))
             {
                 // already has the font 
                 bRet = true;