diff --git a/.gitignore b/.gitignore
index 9f6eedfe2e..028f91e53b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -61,3 +61,4 @@ coverage
 build
 *.log
 test/files/normalise.jpg.png
+test/files/normalise-resized.jpg
diff --git a/src/privileges/categories.js b/src/privileges/categories.js
index 73d0ebc220..49bdb29311 100644
--- a/src/privileges/categories.js
+++ b/src/privileges/categories.js
@@ -171,9 +171,7 @@ module.exports = function (privileges) {
 				}, next);
 			},
 			function (results, next) {
-				var privData = _.fromPairs(privs.map(function (priv, i) {
-					return [priv, results.privileges[i]];
-				}));
+				var privData = _.zipObject(privs, results.privileges);
 				var isAdminOrMod = results.isAdministrator || results.isModerator;
 
 				plugins.fireHook('filter:privileges.categories.get', {
diff --git a/src/privileges/topics.js b/src/privileges/topics.js
index bf02b11797..88273800fe 100644
--- a/src/privileges/topics.js
+++ b/src/privileges/topics.js
@@ -29,9 +29,7 @@ module.exports = function (privileges) {
 				}, next);
 			},
 			function (results, next) {
-				var privData = _.fromPairs(privs.map(function (priv, i) {
-					return [priv, results.privileges[i]];
-				}));
+				var privData = _.zipObject(privs, results.privileges);
 				var disabled = parseInt(results.disabled, 10) === 1;
 				var locked = parseInt(topic.locked, 10) === 1;
 				var deleted = parseInt(topic.deleted, 10) === 1;
diff --git a/src/topics.js b/src/topics.js
index 6869912abc..575199d400 100644
--- a/src/topics.js
+++ b/src/topics.js
@@ -135,12 +135,8 @@ Topics.getTopicsByTids = function (tids, uid, callback) {
 			}, next);
 		},
 		function (results, next) {
-			var users = _.fromPairs(results.users.map(function (user) {
-				return [user.uid, user];
-			}));
-			var categories = _.fromPairs(results.categories.map(function (category) {
-				return [category.cid, category];
-			}));
+			var users = _.zipObject(uids, results.users);
+			var categories = _.zipObject(cids, results.categories);
 
 			for (var i = 0; i < topics.length; i += 1) {
 				if (topics[i]) {
diff --git a/src/topics/tags.js b/src/topics/tags.js
index d6bf35a6e0..dbfb092cc1 100644
--- a/src/topics/tags.js
+++ b/src/topics/tags.js
@@ -247,9 +247,7 @@ module.exports = function (Topics) {
 					tag.score = results.counts[index] ? results.counts[index] : 0;
 				});
 
-				var tagData = _.fromPairs(results.tagData.map(function (tag) {
-					return [tag.value, tag];
-				}));
+				var tagData = _.zipObject(uniqueTopicTags, results.tagData);
 
 				topicTags.forEach(function (tags, index) {
 					if (Array.isArray(tags)) {