diff --git a/include/osg/Math b/include/osg/Math
index 0913d1f4d..9867f4a19 100644
--- a/include/osg/Math
+++ b/include/osg/Math
@@ -196,6 +196,8 @@ inline double round(double v) { return v>=0.0?floor(v+0.5):ceil(v-0.5); }
 
 inline float log2(float v) { return static_cast<float>(log(v)) * INVLN_2; }
 inline double log2(double v) { return static_cast<double>(log(v)) * INVLN_2; }
+inline float log2(int v) { return log2(static_cast<float>(v)); }
+inline float log2(unsigned int v) { return log2(static_cast<float>(v)); }
 
 #if defined(WIN32) && !defined(__CYGWIN__) && !defined(__MWERKS__)
     inline bool isNaN(float v) { return _isnan(v)!=0; }