diff --git a/t/t4151-am-abort.sh b/t/t4151-am-abort.sh
index f45ab0a2e8..7d86cdff64 100755
--- a/t/t4151-am-abort.sh
+++ b/t/t4151-am-abort.sh
@@ -17,6 +17,8 @@ test_expect_success setup '
 	for i in 2 3 4 5 6
 	do
 		echo $i >>file-1 &&
+		echo $i >otherfile-$i &&
+		git add otherfile-$i &&
 		test_tick &&
 		git commit -a -m $i || break
 	done &&