1 files changed, 4 insertions, 1 deletions
diff --git a/git-commit.sh b/git-commit.sh
index 41955e8e6..27aea80a4 100755
--- a/git-commit.sh
+++ b/git-commit.sh
@@ -92,10 +92,13 @@ tt*)
 esac
 
 case "$all,$#" in
-t,*)
+t,0)
 	git-diff-files --name-only -z |
 	git-update-index --remove -z --stdin
 	;;
+t,*)
+	die "Cannot use -a and explicit files at the same time."
+	;;
 ,0)
 	;;
 *)