diff --git a/src/graphics/glwrap.cpp b/src/graphics/glwrap.cpp
index b9a4f2caa..d4da39c11 100644
--- a/src/graphics/glwrap.cpp
+++ b/src/graphics/glwrap.cpp
@@ -64,8 +64,10 @@ PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus;
 static bool is_gl_init = false;
 
 #ifdef DEBUG
+#ifdef WIN32
 #define ARB_DEBUG_OUTPUT
 #endif
+#endif
 
 #ifdef ARB_DEBUG_OUTPUT
 static void
@@ -200,7 +202,7 @@ void initGL()
 #endif
 #endif
 #ifdef ARB_DEBUG_OUTPUT
-// FIXME!!!	glDebugMessageCallbackARB((GLDEBUGPROCARB)debugCallback, NULL);
+    glDebugMessageCallbackARB((GLDEBUGPROCARB)debugCallback, NULL);
 #endif
 }