diff --git a/cocos2dx/CCDirector.cpp b/cocos2dx/CCDirector.cpp
index 366e415391..ec908c996a 100644
--- a/cocos2dx/CCDirector.cpp
+++ b/cocos2dx/CCDirector.cpp
@@ -126,7 +126,7 @@ bool CCDirector::init(void)
 	m_bDisplayFPS = false;
 	m_nFrames = 0;
 	m_pszFPS = new char[10];
-	m_fExpectedFrameRate = 1 / m_dAnimationInterval;
+	m_fExpectedFrameRate = (ccTime)(1 / m_dAnimationInterval);