diff --git a/src/beautifiers/clang-format.coffee b/src/beautifiers/clang-format.coffee
index 8470dbd93..513f9796c 100644
--- a/src/beautifiers/clang-format.coffee
+++ b/src/beautifiers/clang-format.coffee
@@ -61,7 +61,7 @@ module.exports = class ClangFormat extends Beautifier
     )
     .then((dumpFile) =>
       # console.log("clang-format", dumpFile)
-      @run("clang-format", [
+      return @run("clang-format", [
         @dumpToFile(dumpFile, text)
         ["--style=file"]
         ], help: {