diff --git a/gen-version.sh b/gen-version.sh
index 3a08015..80cf49a 100755
--- a/gen-version.sh
+++ b/gen-version.sh
@@ -4,7 +4,7 @@
 V=$1
 
 # Use `git describe` to get current version if we're inside a git repo
-if test -d .git
+if test "$(git rev-parse --git-dir 2>/dev/null)" = '.git'
 then
 	V=$(git describe --abbrev=4 HEAD 2>/dev/null)
 fi