1 files changed, 6 insertions, 2 deletions

diff --git a/ui-diff.c b/ui-diff.c
index a7bc667..d21541b 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -346,6 +346,8 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefi
 	}
 	commit = lookup_commit_reference(new_rev_sha1);
-	if (!commit || parse_commit(commit))
+	if (!commit || parse_commit(commit)) {
 		cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));
+		return;
+	}
 
 	if (old_rev)
@@ -363,6 +365,8 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefi
 		}
 		commit2 = lookup_commit_reference(old_rev_sha1);
-		if (!commit2 || parse_commit(commit2))
+		if (!commit2 || parse_commit(commit2)) {
 			cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1)));
+			return;
+		}
 	}