diff --git a/app/helpers/labels_helper.rb b/app/helpers/labels_helper.rb
index 93806ac199e0e087c2dd449f902d241e3371f110..89a054289e8ad96eae1f674c9ac99756d3e30b59 100644
--- a/app/helpers/labels_helper.rb
+++ b/app/helpers/labels_helper.rb
@@ -65,7 +65,7 @@ module LabelsHelper
 
   def render_colored_cross_project_label(label)
     label_suffix = label.project.name_with_namespace
-    label_suffix = " <i>in #{label_suffix}</i>"
+    label_suffix = " <i>in #{escape_once(label_suffix)}</i>"
     render_colored_label(label, label_suffix)
   end