diff --git a/src/osg/BlendColor.cpp b/src/osg/BlendColor.cpp
index 616a3e1c4..06625b903 100644
--- a/src/osg/BlendColor.cpp
+++ b/src/osg/BlendColor.cpp
@@ -79,6 +79,7 @@ BlendColor::Extensions::Extensions(const Extensions& rhs):
     Referenced()
 {
     _isBlendColorSupported = rhs._isBlendColorSupported;
+    _glBlendColor = rhs._glBlendColor;
 }
 
 void BlendColor::Extensions::lowestCommonDenominator(const Extensions& rhs)