1 files changed, 3 insertions, 3 deletions
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index 1e5bdea0d5..9e53a1a7ca 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -228,9 +228,9 @@ static int show_file(const char *arg, int output_prefix)
 	if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
 		if (output_prefix) {
 			const char *prefix = startup_info->prefix;
-			show(prefix_filename(prefix,
-					     prefix ? strlen(prefix) : 0,
-					     arg));
+			char *fname = prefix_filename(prefix, arg);
+			show(fname);
+			free(fname);
 		} else
 			show(arg);
 		return 1;