diff --git a/src/groups/leave.js b/src/groups/leave.js
index ca19d08950..b7ca0c9b7c 100644
--- a/src/groups/leave.js
+++ b/src/groups/leave.js
@@ -14,12 +14,9 @@ module.exports = function (Groups) {
 			groupNames = [groupNames];
 		}
 
-		const [isMembers, exists] = await Promise.all([
-			Groups.isMemberOfGroups(uid, groupNames),
-			Groups.exists(groupNames),
-		]);
+		const isMembers = await Groups.isMemberOfGroups(uid, groupNames);
 
-		const groupsToLeave = groupNames.filter((groupName, index) => isMembers[index] && exists[index]);
+		const groupsToLeave = groupNames.filter((groupName, index) => isMembers[index]);
 		if (!groupsToLeave.length) {
 			return;
 		}
diff --git a/src/plugins/hooks.js b/src/plugins/hooks.js
index 32bf48c534..3ad98a809f 100644
--- a/src/plugins/hooks.js
+++ b/src/plugins/hooks.js
@@ -132,17 +132,16 @@ module.exports = function (Plugins) {
 		if (!Array.isArray(hookList) || !hookList.length) {
 			return;
 		}
-		await async.each(hookList, function (hookObj, next) {
+		for (const hookObj of hookList) {
 			if (typeof hookObj.method !== 'function') {
 				if (global.env === 'development') {
 					winston.warn('[plugins] Expected method for hook \'' + hook + '\' in plugin \'' + hookObj.id + '\' not found, skipping.');
 				}
-				return next();
+			} else {
+				/* eslint-disable no-await-in-loop */
+				await hookObj.method(params);
 			}
-
-			hookObj.method(params);
-			next();
-		});
+		}
 	}
 
 	async function fireStaticHook(hook, hookList, params) {
diff --git a/src/rewards/index.js b/src/rewards/index.js
index 825602a8e5..7144c7c4ae 100644
--- a/src/rewards/index.js
+++ b/src/rewards/index.js
@@ -70,10 +70,11 @@ async function checkCondition(reward, method) {
 
 async function giveRewards(uid, rewards) {
 	const rewardData = await getRewardsByRewardData(rewards);
-	await Promise.all(rewards.map(async function (reward) {
-		plugins.fireHook('action:rewards.award:' + reward.rid, { uid: uid, reward: rewardData[rewards.indexOf(reward)] });
-		await db.sortedSetIncrBy('uid:' + uid + ':rewards', 1, reward.id);
-	}));
+	for (let i = 0; i < rewards.length; i++) {
+		/* eslint-disable no-await-in-loop */
+		await plugins.fireHook('action:rewards.award:' + rewards[i].rid, { uid: uid, reward: rewardData[i] });
+		await db.sortedSetIncrBy('uid:' + uid + ':rewards', 1, rewards[i].id);
+	}
 }
 
 require('../promisify')(rewards);