diff --git a/src/osgViewer/CMakeLists.txt b/src/osgViewer/CMakeLists.txt
index 9da366a20..7a65cca68 100644
--- a/src/osgViewer/CMakeLists.txt
+++ b/src/osgViewer/CMakeLists.txt
@@ -173,7 +173,9 @@ ELSE()
 
             SET(LIB_EXTRA_LIBS ${X11_X11_LIB} ${OPENGL_LIBRARIES} ${LIB_EXTRA_LIBS})
             SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:${CMAKE_OSX_SYSROOT}/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib")
-        ENDIF(APPLE)
+        ELSE()
+            SET(LIB_EXTRA_LIBS ${X11_X11_LIB} ${LIB_EXTRA_LIBS})
+        ENDIF()
     ENDIF()
 ENDIF()