diff --git a/app/access_controls/access_control_delete.php b/app/access_controls/access_control_delete.php
index 2996cc85af..9b703f3ac3 100644
--- a/app/access_controls/access_control_delete.php
+++ b/app/access_controls/access_control_delete.php
@@ -34,6 +34,9 @@ else {
 			$prep_statement = $db->prepare(check_sql($sql));
 			$prep_statement->execute();
 			unset($sql);
+
+		// clear cache
+			remove_config_from_cache('configuration:acl.conf');
 	}
 
 //redirect the user
diff --git a/app/access_controls/access_control_edit.php b/app/access_controls/access_control_edit.php
index 798e2fb4c6..d867fe507c 100644
--- a/app/access_controls/access_control_edit.php
+++ b/app/access_controls/access_control_edit.php
@@ -74,6 +74,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 				$db->exec(check_sql($sql));
 				unset($sql);
 
+				remove_config_from_cache('configuration:acl.conf');
 				$_SESSION['message'] = $text['message-add'];
 				header('Location: access_controls.php');
 				return;
@@ -89,6 +90,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 				$db->exec(check_sql($sql));
 				unset($sql);
 
+				remove_config_from_cache('configuration:acl.conf');
 				$_SESSION['message'] = $text['message-update'];
 				header('Location: access_controls.php');
 				return;
diff --git a/app/access_controls/access_control_node_delete.php b/app/access_controls/access_control_node_delete.php
index 4329ed4325..fec0b9bd20 100644
--- a/app/access_controls/access_control_node_delete.php
+++ b/app/access_controls/access_control_node_delete.php
@@ -27,6 +27,7 @@ else {
 		$prep_statement = $db->prepare(check_sql($sql));
 		$prep_statement->execute();
 		unset($sql);
+		remove_config_from_cache('configuration:acl.conf');
 	}
 
 //redirect the user
diff --git a/app/access_controls/access_control_node_edit.php b/app/access_controls/access_control_node_edit.php
index d40622a8ec..2c4d0bdea1 100644
--- a/app/access_controls/access_control_node_edit.php
+++ b/app/access_controls/access_control_node_edit.php
@@ -85,6 +85,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 				$db->exec(check_sql($sql));
 				unset($sql);
 
+				remove_config_from_cache('configuration:acl.conf');
 				$_SESSION['message'] = $text['message-add'];
 				header('Location: access_control_edit.php?id='.$access_control_uuid);
 				return;
@@ -102,6 +103,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 				$db->exec(check_sql($sql));
 				unset($sql);
 
+				remove_config_from_cache('configuration:acl.conf');
 				$_SESSION['message'] = $text['message-update'];
 				header('Location: access_control_edit.php?id='.$access_control_uuid);
 				return;
diff --git a/app/conference_centers/resources/classes/conference_center.php b/app/conference_centers/resources/classes/conference_center.php
index 92d1c7768b..63089536f8 100644
--- a/app/conference_centers/resources/classes/conference_center.php
+++ b/app/conference_centers/resources/classes/conference_center.php
@@ -42,7 +42,7 @@
 		public function room_count() {
 			//get the room count
 				$not_admin = 1;
-				if (if_permision("conference_room_view_all")) {
+				if (permission_exists("conference_room_view_all")) {
 					$not_admin = 0;
 				}
 				$sql = "select count(*) as num_rows from v_conference_rooms as r, v_meetings as p ";
@@ -79,7 +79,7 @@
 		public function rooms() {
 			//get the list of rooms
 				$not_admin = 1;
-				if (if_permision("conference_room_view_all")) {
+				if (permission_exists("conference_room_view_all")) {
 					$not_admin = 0;
 				}
 				$fields = "r.domain_uuid, r.conference_room_uuid, r.conference_center_uuid, r.meeting_uuid, r.conference_room_name, max_members, ";