diff --git a/server/methods/addRoomModerator.js b/server/methods/addRoomModerator.js
index 1499ff24d01..20b89d83174 100644
--- a/server/methods/addRoomModerator.js
+++ b/server/methods/addRoomModerator.js
@@ -31,7 +31,7 @@ Meteor.methods({
 			});
 		}
 
-		if (Array.isArray(subscription.roles) === true && subscription.roles.contains('moderator') === true) {
+		if (Array.isArray(subscription.roles) === true && subscription.roles.includes('moderator') === true) {
 			throw new Meteor.Error('error-user-already-moderator', 'User is already a moderator', {
 				method: 'addRoomModerator'
 			});
diff --git a/server/methods/removeRoomModerator.js b/server/methods/removeRoomModerator.js
index ceb6ca26b4a..812651fd7e0 100644
--- a/server/methods/removeRoomModerator.js
+++ b/server/methods/removeRoomModerator.js
@@ -31,7 +31,7 @@ Meteor.methods({
 			});
 		}
 
-		if (Array.isArray(subscription.roles) === false || subscription.roles.contains('moderator') === false) {
+		if (Array.isArray(subscription.roles) === false || subscription.roles.includes('moderator') === false) {
 			throw new Meteor.Error('error-user-not-moderator', 'User is not a moderator', {
 				method: 'removeRoomModerator'
 			});