diff --git a/lodash/lodash-tests.ts b/lodash/lodash-tests.ts
index 33068df115..0ff0fa62c1 100644
--- a/lodash/lodash-tests.ts
+++ b/lodash/lodash-tests.ts
@@ -1221,6 +1221,12 @@ result = <boolean>_([1, 2, 3]).isEmpty();
 result = <boolean>_({}).isEmpty();
 result = <boolean>_('').isEmpty();
 
+// _.isError
+result = <boolean>_.isError(any);
+result = <boolean>_(1).isError();
+result = <boolean>_<any>([]).isError();
+result = <boolean>_({}).isError();
+
 // _.isFinite
 result = <boolean>_.isFinite(any);
 result = <boolean>_(1).isFinite();
diff --git a/lodash/lodash.d.ts b/lodash/lodash.d.ts
index df46733b29..f76ca23384 100644
--- a/lodash/lodash.d.ts
+++ b/lodash/lodash.d.ts
@@ -6231,6 +6231,24 @@ declare module _ {
         isEmpty(): boolean;
     }
 
+    //_.isError
+    interface LoDashStatic {
+        /**
+         * Checks if value is an Error, EvalError, RangeError, ReferenceError, SyntaxError, TypeError, or URIError
+         * object.
+         * @param value The value to check.
+         * @return Returns true if value is an error object, else false.
+         */
+        isError(value: any): boolean;
+    }
+
+    interface LoDashWrapperBase<T, TWrapper> {
+        /**
+         * @see _.isError
+         */
+        isError(): boolean;
+    }
+
     //_.isFinite
     interface LoDashStatic {
         /**
@@ -7048,17 +7066,6 @@ declare module _ {
         isElement(value?: any): boolean;
     }
 
-    //_.isError
-    interface LoDashStatic {
-        /**
-        * Checks if value is an Error, EvalError, RangeError, ReferenceError, SyntaxError, TypeError,
-        * or URIError object.
-        * @param value The value to check.
-        * @return True if value is an error object, else false.
-        */
-        isError(value: any): boolean;
-    }
-
     //_.isEqual
     interface EqCustomizer {
         (value: any, other: any, indexOrKey?: number|string): boolean;