diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a18930af..8b055179d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -542,12 +542,12 @@ ELSE()
     OPTION(OSG_CPP_EXCEPTIONS_AVAILABLE "Set to OFF to disable compile of OSG components that use C++ exceptions." ON)
 ENDIF()
 
-SET(OSG_GL_CONTEXT_VERSION "1.0" CACHE STRING "GL Context String to pass when creaing graphics contexts")
 
 # Map the OSG_GL*_AVAILABLE settings to OpenGL header settings
+SET(DEFAULT_GL_CONTEXT_VERSION "1.0")
 IF (OSG_GL3_AVAILABLE)
 
-    SET(OSG_GL_CONTEXT_VERSION "3.3")
+    SET(DEFAULT_GL_CONTEXT_VERSION "3.3")
 
     IF (APPLE)
         SET(OPENGL_HEADER1 "#include <OpenGL/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
@@ -600,6 +600,8 @@ ELSE()
     ENDIF()
 ENDIF()
 
+SET(OSG_GL_CONTEXT_VERSION ${DEFAULT_GL_CONTEXT_VERSION} CACHE STRING "GL Context String to pass when creaing graphics contexts")
+
 IF (OSG_GL1_AVAILABLE)
     SET(OSG_GL1_FEATURES 1)
 ELSE()