diff --git a/cocos/2d/CCActionCamera.cpp b/cocos/2d/CCActionCamera.cpp
index beea0b952d..cb02318f0c 100644
--- a/cocos/2d/CCActionCamera.cpp
+++ b/cocos/2d/CCActionCamera.cpp
@@ -194,11 +194,11 @@ void OrbitCamera::startWithTarget(Node *target)
 
     float r, zenith, azimuth;
     this->sphericalRadius(&r, &zenith, &azimuth);
-    if( isnan(_radius) )
+    if( std::isnan(_radius) )
         _radius = r;
-    if( isnan(_angleZ) )
+    if( std::isnan(_angleZ) )
         _angleZ = (float)CC_RADIANS_TO_DEGREES(zenith);
-    if( isnan(_angleX) )
+    if( std::isnan(_angleX) )
         _angleX = (float)CC_RADIANS_TO_DEGREES(azimuth);
 
     _radZ = (float)CC_DEGREES_TO_RADIANS(_angleZ);
diff --git a/cocos/2d/CCSpriteFrame.cpp b/cocos/2d/CCSpriteFrame.cpp
index 809fcbac89..516d4f7157 100644
--- a/cocos/2d/CCSpriteFrame.cpp
+++ b/cocos/2d/CCSpriteFrame.cpp
@@ -188,7 +188,7 @@ void SpriteFrame::setAnchorPoint(const Vec2& anchorPoint)
 
 bool SpriteFrame::hasAnchorPoint() const
 {
-    return !isnan(_anchorPoint.x);
+    return !std::isnan(_anchorPoint.x);
 }
 
 void SpriteFrame::setTexture(Texture2D * texture)
diff --git a/extensions/GUI/CCControlExtension/CCControlUtils.cpp b/extensions/GUI/CCControlExtension/CCControlUtils.cpp
index f2c868d20c..97c69a553e 100644
--- a/extensions/GUI/CCControlExtension/CCControlUtils.cpp
+++ b/extensions/GUI/CCControlExtension/CCControlUtils.cpp
@@ -92,7 +92,7 @@ RGBA ControlUtils::RGBfromHSV(HSV value)
     
     if (value.s <= 0.0) // < is bogus, just shuts up warnings
     {       
-        if (isnan(value.h)) // value.h == NAN
+        if (std::isnan(value.h)) // value.h == NAN
         {   
             out.r = value.v;
             out.g = value.v;