diff --git a/bin/git-delete-merged-branches b/bin/git-delete-merged-branches
index a5f6b8e..dd36bd5 100755
--- a/bin/git-delete-merged-branches
+++ b/bin/git-delete-merged-branches
@@ -1,3 +1,3 @@
 #!/bin/sh
 
-git branch --merged | grep -v "\*" | xargs -n 1 git branch -d
+git branch --merged | grep -v "\*" | grep -v master | xargs -n 1 git branch -d