diff --git a/srcpkgs/xorg-server/INSTALL b/srcpkgs/xorg-server/INSTALL
index 1ee3c1233a..b5917fe82f 100644
--- a/srcpkgs/xorg-server/INSTALL
+++ b/srcpkgs/xorg-server/INSTALL
@@ -1,7 +1,9 @@
 # Create libglx-xorg.so libglx.so symlink for Mesa.
 case ${ACTION} in
 post)
-	cd usr/lib/xorg/modules/extensions
-	rm -f libglx.so && ln -sf libglx-xorg.so libglx.so
+	if [ ! -e usr/lib/xorg/modules/extensions/libglx-nvidia.so* ]; then
+		cd usr/lib/xorg/modules/extensions
+		rm -f libglx.so && ln -sf libglx-xorg.so libglx.so
+	fi
 	;;
 esac