diff --git a/roles/mailman3/templates/mailmanweb.conf.j2 b/roles/mailman3/templates/mailmanweb.conf.j2
index 82430119b4..a6a73678ce 100644
--- a/roles/mailman3/templates/mailmanweb.conf.j2
+++ b/roles/mailman3/templates/mailmanweb.conf.j2
@@ -35,7 +35,7 @@ RewriteEngine on
 RewriteRule  ^/$    /archives [R,L]
 # Spiders-gone-wild
 # These spiders do not follow robots.txt
-RewriteCond %{HTTP_USER_AGENT ^.*(Bytespider|ClaudeBot).*$ [NC]
+RewriteCond %{HTTP_USER_AGENT} ^.*(Bytespider|ClaudeBot).*$ [NC]
 RewriteRule .* - [F,L]
 
 # Old static archives