diff --git a/lodash/lodash-tests.ts b/lodash/lodash-tests.ts
index f49180a80..424c60375 100644
--- a/lodash/lodash-tests.ts
+++ b/lodash/lodash-tests.ts
@@ -5989,10 +5989,24 @@ result = <boolean>_({}).isNumber();
 }
 
 // _.isObject
-result = <boolean>_.isObject(any);
-result = <boolean>_(1).isObject();
-result = <boolean>_<any>([]).isObject();
-result = <boolean>_({}).isObject();
+module TestIsObject {
+    {
+        let result: boolean;
+
+        result = _.isObject(any);
+        result = _(1).isObject();
+        result = _<any>([]).isObject();
+        result = _({}).isObject();
+    }
+
+    {
+        let result: _.LoDashExplicitWrapper<boolean>;
+
+        result = _(1).chain().isObject();
+        result = _<any>([]).chain().isObject();
+        result = _({}).chain().isObject();
+    }
+}
 
 // _.isPlainObject
 result = <boolean>_.isPlainObject(any);
diff --git a/lodash/lodash.d.ts b/lodash/lodash.d.ts
index 314223bfb..ef6079704 100644
--- a/lodash/lodash.d.ts
+++ b/lodash/lodash.d.ts
@@ -10067,9 +10067,10 @@ declare module _ {
         /**
          * Checks if value is the language type of Object. (e.g. arrays, functions, objects, regexes, new Number(0),
          * and new String(''))
+         *
          * @param value The value to check.
          * @return Returns true if value is an object, else false.
-         **/
+         */
         isObject(value?: any): boolean;
     }
 
@@ -10080,6 +10081,13 @@ declare module _ {
         isObject(): boolean;
     }
 
+    interface LoDashExplicitWrapperBase<T, TWrapper> {
+        /**
+         * see _.isObject
+         */
+        isObject(): LoDashExplicitWrapper<boolean>;
+    }
+
     //_.isPlainObject
     interface LoDashStatic {
         /**