diff --git a/app/extensions/extension_edit.php b/app/extensions/extension_edit.php
index 89050a2e96..dcf7bbef70 100644
--- a/app/extensions/extension_edit.php
+++ b/app/extensions/extension_edit.php
@@ -547,6 +547,13 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 				}
 				unset ($prep_statement);
 
+			//delete extension from memcache
+				$fp = event_socket_create($_SESSION['event_socket_ip_address'], $_SESSION['event_socket_port'], $_SESSION['event_socket_password']);
+				if ($fp) {
+					$switch_cmd .= "memcache delete directory:".$extension."@".$_SESSION['domain_name'];
+					$switch_result = event_socket_request($fp, 'api '.$switch_cmd);
+				}
+
 			//show the action and redirect the user
 				require_once "includes/header.php";
 				echo "<meta http-equiv=\"refresh\" content=\"2;url=extensions.php\">\n";