diff --git a/include/GL/gl.h b/include/GL/gl.h
index e65e1bc..60518d2 100644
--- a/include/GL/gl.h
+++ b/include/GL/gl.h
@@ -72,7 +72,8 @@
 #  define GLAPIENTRY
 #endif /* WIN32 && !CYGWIN */
 
-#if (defined(__BEOS__) && defined(__POWERPC__)) || defined(__QUICKDRAW__)
+/* See https://bugs.freedesktop.org/show_bug.cgi?id=77749 */
+#if (defined(__BEOS__) && defined(__POWERPC__)) /* || defined(__QUICKDRAW__) */
 #  define PRAGMA_EXPORT_SUPPORTED		1
 #endif
 
diff --git a/include/GL/osmesa.h b/include/GL/osmesa.h
index 304655e..211226e 100644
--- a/include/GL/osmesa.h
+++ b/include/GL/osmesa.h
@@ -101,7 +101,8 @@
 typedef struct osmesa_context *OSMesaContext;
 
 
-#if defined(__QUICKDRAW__)
+/* See https://bugs.freedesktop.org/show_bug.cgi?id=77749 */
+#if 0 /* defined(__QUICKDRAW__) */
 #pragma export on
 #endif