diff --git a/Library/ENV/4.3/cc b/Library/ENV/4.3/cc
index 5935cb58122f76a6fb5bcf0fedfed3f513b3dd53..fcba402633baad006afc5af21e433b4d5e02e7a5 100755
--- a/Library/ENV/4.3/cc
+++ b/Library/ENV/4.3/cc
@@ -55,7 +55,8 @@ class Cmd
   def tool
     @tool ||= case @arg0
     when 'ld' then 'ld'
-    when 'cc', 'c99', 'c89', 'cpp'
+    when 'cpp' then 'cpp'
+    when 'cc', 'c99', 'c89'
       # Ideally we would run `cx9`, however these tools are POSIX compliant
       # and don't support many flags. We need -isystem for instance, but also
       # reliability is generally much higher if we just get clang/gcc to do