diff --git a/src/lisp/Config.x86_darwin b/src/lisp/Config.x86_darwin
index f50a85700906aeacecf3cfe5ccb8fc7055063737..e9ffbe56ce445e47ca319935810e9561e399eaa5 100644
--- a/src/lisp/Config.x86_darwin
+++ b/src/lisp/Config.x86_darwin
@@ -2,6 +2,9 @@
 
 include Config.x86_common
 
+# Use clang on darwin.
+CC = clang
+
 # Compile code that will run on OSX 10.5 (Tiger)
 MIN_VER = -mmacosx-version-min=10.5