diff --git a/rhodecode/templates/compare/compare_commits.mako b/rhodecode/templates/compare/compare_commits.mako
--- a/rhodecode/templates/compare/compare_commits.mako
+++ b/rhodecode/templates/compare/compare_commits.mako
@@ -57,7 +57,7 @@
- ${urlify_commit_message(commit.message, c.repo_name, issues_container_callback=getattr(c, 'referenced_commit_issues', lambda p:p)(commit.serialize()))}
+ ${urlify_commit_message(commit.message, c.repo_name, issues_container_callback=getattr(c, 'referenced_commit_issues', h.IssuesRegistry())(commit.serialize()))}
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