diff --git a/src/osg/FrameBufferObject.cpp b/src/osg/FrameBufferObject.cpp
index 3f2a16423..fc7aed226 100644
--- a/src/osg/FrameBufferObject.cpp
+++ b/src/osg/FrameBufferObject.cpp
@@ -95,10 +95,8 @@ FBOExtensions::FBOExtensions(unsigned int contextID)
     LOAD_FBO_EXT(glRenderbufferStorageMultisample);
     LOAD_FBO_EXT(glRenderbufferStorageMultisampleCoverageNV);
 
-    if (isGLExtensionSupported(contextID, "GL_EXT_packed_depth_stencil"))
-    {
-        _packed_depth_stencil_supported = true;
-    }
+    _packed_depth_stencil_supported = OSG_GL3_FEATURES ||
+        (isGLExtensionSupported(contextID, "GL_EXT_packed_depth_stencil"));
 }