diff --git a/CMakeLists.txt b/CMakeLists.txt
index 71b257a03..ddc44910f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -605,9 +605,9 @@ SET(OPENSCENEGRAPH_VERSION_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/include/osg/Versi
 CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/Version.in"
                "${OPENSCENEGRAPH_VERSION_HEADER}")
 
-SET(OPENSCENEGRAPH_OPENGGL_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/include/osg/OpenGL")
+SET(OPENSCENEGRAPH_OPENGL_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/include/osg/OpenGL")
 CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/OpenGL.in"
-               "${OPENSCENEGRAPH_OPENGGL_HEADER}")
+               "${OPENSCENEGRAPH_OPENGL_HEADER}")
 
 # INSTALL_FILES(/include/osg/ FILES "${OPENSCENEGRAPH_CONFIG_HEADER}")