diff --git a/bundle.c b/bundle.c
index f55a521b2a..aad5f251ca 100644
--- a/bundle.c
+++ b/bundle.c
@@ -492,7 +492,7 @@ int create_bundle(struct repository *r, const char *path,
 	int bundle_fd = -1;
 	int bundle_to_stdout;
 	int ref_count = 0;
-	struct rev_info revs, revs_copy;
+	struct rev_info revs, revs_copy = { 0 };
 	int min_version = 2;
 	struct bundle_prerequisites_info bpi;
 	int ret;
diff --git a/t/t5607-clone-bundle.sh b/t/t5607-clone-bundle.sh
index d709bea753..c39db5a955 100755
--- a/t/t5607-clone-bundle.sh
+++ b/t/t5607-clone-bundle.sh
@@ -127,6 +127,13 @@ test_expect_success 'failed bundle creation does not leave cruft' '
 	test_path_is_missing fail.bundle.lock
 '
 
+test_expect_success 'an unknown argument after the revisions is an error' '
+	test_must_fail git bundle create unknown.bundle main --no-such-option \
+		2>err &&
+	test_grep "unrecognized argument: --no-such-option" err &&
+	test_path_is_missing unknown.bundle
+'
+
 test_expect_success 'fetch SHA-1 from bundle' '
 	test_create_repo foo &&
 	test_commit -C foo x &&