diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Run.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Run.pm
index 88b3329c8..ca5cb93bd 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Run.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Run.pm
@@ -833,7 +833,7 @@ sub sendHtml {
           ( $req->info =~ /<iframe.*?src="(.*?)"/sg );
     }
     if (@url) {
-        $csp .= join( ' ', 'child-src', @url ) . ';';
+        $csp .= join( ' ', 'child-src', @url, "'self'" ) . ';';
     }
 
     # Set CSP header