1 files changed, 4 insertions, 0 deletions

diff --git a/ui-patch.c b/ui-patch.c
index e7a010a..7ee2c41 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -85,13 +85,17 @@ void cgit_print_patch(char *hex, struct cacheitem *item)
         commit = lookup_commit_reference(sha1);
         if (!commit) {
                 cgit_print_error(fmt("Bad commit reference: %s", hex));
                 return;
         }
         info = cgit_parse_commit(commit);
+
+        if (commit->parents && commit->parents->item)
         hashcpy(old_sha1, commit->parents->item->object.sha1);
+        else
+                hashclr(old_sha1);
 
         patchname = fmt("%s.patch", sha1_to_hex(sha1));
         cgit_print_snapshot_start("text/plain", patchname, item);
         htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
         htmlf("From: %s%s\n", info->author, info->author_email);
         html("Date: ");