diff --git a/reactos/dll/win32/opengl32/gl.c b/reactos/dll/win32/opengl32/gl.c
index 87e868f0a6c..d57caf96f1c 100644
--- a/reactos/dll/win32/opengl32/gl.c
+++ b/reactos/dll/win32/opengl32/gl.c
@@ -124,4 +124,11 @@ GLFUNCS_MACRO
 # undef X
 #endif /* !defined(_M_IX86) */
 
+/* Unknown debugging function */
+GLint WINAPI glDebugEntry( GLint unknown1, GLint unknown2 )
+{
+    return 0;
+}
+
+
 /* EOF */
diff --git a/reactos/dll/win32/opengl32/opengl32.spec b/reactos/dll/win32/opengl32/opengl32.spec
index efc453029a2..5f881b06741 100644
--- a/reactos/dll/win32/opengl32/opengl32.spec
+++ b/reactos/dll/win32/opengl32/opengl32.spec
@@ -62,7 +62,7 @@
 @  stdcall glCopyTexSubImage1D( long long long long long long ) 
 @  stdcall glCopyTexSubImage2D( long long long long long long long long ) 
 @  stdcall glCullFace( long )
-@ stub glDebugEntry
+@  stdcall glDebugEntry(long long)
 @  stdcall glDeleteLists( long long ) 
 @  stdcall glDeleteTextures( long ptr ) 
 @  stdcall glDepthFunc( long )