diff --git a/filterObject.js b/filterObject.js
index 3bcd0ef74..190e82bad 100644
--- a/filterObject.js
+++ b/filterObject.js
@@ -19,7 +19,8 @@
 function filterObject(object, predicate) {
   const result = []
   Object.keys(Object(object)).forEach((key) => {
-    if (predicate(object[key], key, object)) {
+    const value = object[key]
+    if (predicate(value, key, object)) {
       result.push(value)
     }
   })
diff --git a/mapKey.js b/mapKey.js
index d2488c9ae..7405a2ccc 100644
--- a/mapKey.js
+++ b/mapKey.js
@@ -9,7 +9,7 @@
  * @param {Object} object The object to iterate over.
  * @param {Function} iteratee The function invoked per iteration.
  * @returns {Object} Returns the new mapped object.
- * @see mapValues
+ * @see mapValue
  * @example
  *
  * mapKey({ 'a': 1, 'b': 2 }, function(value, key) {
@@ -26,4 +26,4 @@ function mapKey(object, iteratee) {
   return result
 }
 
-export default mapKeys
+export default mapKey
diff --git a/mapObject.js b/mapObject.js
index 96c24ae86..a817ca729 100644
--- a/mapObject.js
+++ b/mapObject.js
@@ -17,7 +17,7 @@
  * // => [16, 64] (iteration order is not guaranteed)
  */
 function mapObject(object, iteratee) {
-  const props = Object.keys(object);
+  const props = Object.keys(object)
   const result = new Array(props.length)
 
   props.forEach((key, index) => {
diff --git a/mapValue.js b/mapValue.js
index 31e0c1dde..e7820ce99 100644
--- a/mapValue.js
+++ b/mapValue.js
@@ -23,9 +23,9 @@
 function mapValue(object, iteratee) {
   const result = {}
   Object.keys(Object(object)).forEach((key) => {
-    result[key] = iteratee(object[value], key, object)
+    result[key] = iteratee(object[key], key, object)
   })
   return result
 }
 
-export default mapValues
+export default mapValue