diff --git a/Formula/tmap.rb b/Formula/tmap.rb
index d351637c02..ce80fdf6ac 100644
--- a/Formula/tmap.rb
+++ b/Formula/tmap.rb
@@ -18,7 +18,7 @@ class Tmap < Formula
   depends_on 'google-perftools' if build.include? 'perf'
 
   fails_with :clang do
-    build 421
+    build 425
     cause 'Missing symbols being discussed in iontorrent/TMAP#3'
   end