diff --git a/snappymail/v/0.0.0/app/libraries/RainLoop/ServiceActions.php b/snappymail/v/0.0.0/app/libraries/RainLoop/ServiceActions.php
index 80eee67b1..b84742698 100644
--- a/snappymail/v/0.0.0/app/libraries/RainLoop/ServiceActions.php
+++ b/snappymail/v/0.0.0/app/libraries/RainLoop/ServiceActions.php
@@ -406,7 +406,7 @@ class ServiceActions
 				if (\method_exists($this->oActions, $sMethodName))
 				{
 					\header('X-Raw-Action: '.$sMethodName, true);
-					\header('Content-Security-Policy: script-src \'none\'; frame-src \'none\'; child-src \'none\'', true);
+					\header('Content-Security-Policy: script-src \'none\'; child-src \'none\'', true);
 
 					$sRawError = '';
 					$this->oActions->SetActionParams(array(