diff --git a/headers/os/opengl/GL/gl.h b/headers/os/opengl/GL/gl.h
index f4b02d4c72..7b34a395f7 100644
--- a/headers/os/opengl/GL/gl.h
+++ b/headers/os/opengl/GL/gl.h
@@ -67,7 +67,7 @@
 #  define GLAPIENTRY
 #endif /* WIN32 && !CYGWIN */
 
-#if ((defined(__BEOS__) || defined(__HAIKU__)) && defined(__POWERPC__)) || defined(__QUICKDRAW__)
+#if (defined(__BEOS__) && defined(__POWERPC__)) || defined(__QUICKDRAW__)
 #  define PRAGMA_EXPORT_SUPPORTED		1
 #endif