diff --git a/newsletters/templates/newsletters.html b/newsletters/templates/newsletters.html
index b576a73..a9329d9 100644
--- a/newsletters/templates/newsletters.html
+++ b/newsletters/templates/newsletters.html
@@ -4,6 +4,7 @@
     <style>
         .newsletter-header {
             cursor: pointer;
+            user-select: none;
         }
 
         .newsletter-header:hover {