diff --git a/Library/ENV/4.3/cc b/Library/ENV/4.3/cc
index 05ee3bf532..30f32b04aa 100755
--- a/Library/ENV/4.3/cc
+++ b/Library/ENV/4.3/cc
@@ -232,9 +232,9 @@ class Cmd
     adds = args - @args
     dups = dels & args
 
-    puts "brew: superenv removed: #{dels*' '}" unless dels.empty?
-    puts "brew: superenv deduped: #{dups}" unless dups.empty?
-    puts "brew: superenv added: #{adds*' '}" unless adds.empty?
+    STDERR.puts "brew: superenv removed: #{dels*' '}" unless dels.empty?
+    STDERR.puts "brew: superenv deduped: #{dups}" unless dups.empty?
+    STDERR.puts "brew: superenv added: #{adds*' '}" unless adds.empty?
   end
   def verbose?
     !ENV['VERBOSE'].nil? || !ENV['HOMEBREW_VERBOSE'].nil?