diff --git a/react-redux/index.d.ts b/react-redux/index.d.ts
index 2d76aaac00..8daa310b51 100644
--- a/react-redux/index.d.ts
+++ b/react-redux/index.d.ts
@@ -49,14 +49,9 @@ export interface InferableComponentDecorator {
 export declare function connect(): InferableComponentDecorator;
 
 export declare function connect<TStateProps, TDispatchProps, TOwnProps>(
-    mapStateToProps: FuncOrSelf<MapStateToProps<TStateProps, TOwnProps>>,
-    mapDispatchToProps?: FuncOrSelf<MapDispatchToPropsFunction<TDispatchProps, TOwnProps> | MapDispatchToPropsObject>
-): ComponentDecorator<TStateProps & TDispatchProps, TOwnProps>;
-
-export declare function connect<TStateProps, TDispatchProps, TOwnProps>(
-    mapStateToProps: FuncOrSelf<MapStateToProps<TStateProps, TOwnProps>>,
-    mapDispatchToProps: FuncOrSelf<MapDispatchToPropsFunction<TDispatchProps, TOwnProps> | MapDispatchToPropsObject>,
-    mergeProps: MergeProps<TStateProps, TDispatchProps, TOwnProps>,
+    mapStateToProps?: FuncOrSelf<MapStateToProps<TStateProps, TOwnProps>>,
+    mapDispatchToProps?: FuncOrSelf<MapDispatchToPropsFunction<TDispatchProps, TOwnProps> | MapDispatchToPropsObject>,
+    mergeProps?: MergeProps<TStateProps, TDispatchProps, TOwnProps>,
     options?: Options
 ): ComponentDecorator<TStateProps & TDispatchProps, TOwnProps>;