diff --git a/t/t3903-stash.sh b/t/t3903-stash.sh
index 70879941c2..d4867536b9 100755
--- a/t/t3903-stash.sh
+++ b/t/t3903-stash.sh
@@ -1790,4 +1790,21 @@ test_expect_success 'stash.index=false overridden by --index' '
 	test_cmp expect file
 '
 
+test_expect_success 'stash show --include-untracked includes untracked files' '
+	git reset --hard &&
+
+	echo tracked >tracked &&
+	git add tracked &&
+	git commit -m "base" &&
+
+	echo change >>tracked &&
+	echo untracked >untracked &&
+
+	git stash push --include-untracked &&
+	test_path_is_missing untracked &&
+
+	git stash show --include-untracked >actual &&
+	test_grep "untracked" actual
+'
+
 test_done