diff --git a/vim/after/syntax/gitcommit.vim b/vim/after/syntax/gitcommit.vim
new file mode 100644
index 0000000..11db794
--- /dev/null
+++ b/vim/after/syntax/gitcommit.vim
@@ -0,0 +1,3 @@
+syn match     gitCommitNumber      "\<\d\+\>"     containedin=gitCommitComment
+syn keyword   gitCommitAhead        ahead         containedin=gitCommitOnBranch
+syn keyword   gitCommitBehind       behind        containedin=gitCommitOnBranch