diff --git a/modules/gerrit/templates/gerrit.config.erb b/modules/gerrit/templates/gerrit.config.erb
index b35d077e0a..dc3abd76c5 100644
--- a/modules/gerrit/templates/gerrit.config.erb
+++ b/modules/gerrit/templates/gerrit.config.erb
@@ -121,3 +121,5 @@
 [index]
 	type = <%= secondary_index_type %>
 <% end -%>
+[mimetype "image/*"]
+safe = true