diff --git a/prompt.zsh b/prompt.zsh
index 229c76b..c3e2bfc 100644
--- a/prompt.zsh
+++ b/prompt.zsh
@@ -34,6 +34,7 @@ zstyle ':vcs_info:git*' actionformats ' %b|%a'
 
 # Fastest possible way to check if repo is dirty
 git_dirty() {
+	[ -d .git ] || return
 	git diff --quiet --ignore-submodules HEAD 2>/dev/null; [ $? -eq 1 ] && echo '*'
 }