diff --git a/config/Makefile.darwin-universal b/config/Makefile.darwin-universal
index 9518f71..7bc4c4c 100644
--- a/config/Makefile.darwin-universal
+++ b/config/Makefile.darwin-universal
@@ -1,3 +1,6 @@
+#
+# Needs to be clang toolchain for universal: -arch i386 -arch x86_64
+#
 GLEW_DEST = /usr/local
 NAME = $(GLEW_NAME)
 CC = cc