diff --git a/.istanbul.yml b/.istanbul.yml
index d7613f6532..d03f5aa7c8 100644
--- a/.istanbul.yml
+++ b/.istanbul.yml
@@ -4,7 +4,7 @@ instrumentation:
     extensions:
         - .js
     default-excludes: false
-    excludes: [ '**/node_modules/**']
+    excludes: [ '**/node_modules/**','jscomp/test/**']
     embed-source: false
     variable: __coverage__
     compact: true