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
@@ -344,10 +344,12 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefi
                 cgit_print_error(fmt("Bad object name: %s", new_rev));
                 return;
         }
         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)
                 get_sha1(old_rev, old_rev_sha1);
         else if (commit->parents && commit->parents->item)
@@ -361,10 +363,12 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefi
                         cgit_print_error(fmt("Bad object name: %s", sha1_to_hex(old_rev_sha1)));
                         return;
                 }
                 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;
+                }
         }
 
         if ((ctx.qry.ssdiff && !ctx.cfg.ssdiff) || (!ctx.qry.ssdiff && ctx.cfg.ssdiff))
                 use_ssdiff = 1;