diff --git a/types/mousetrap/index.d.ts b/types/mousetrap/index.d.ts
index b94b475763..541d680654 100644
--- a/types/mousetrap/index.d.ts
+++ b/types/mousetrap/index.d.ts
@@ -1,6 +1,6 @@
 // Type definitions for Mousetrap 1.6.x
 // Project: http://craig.is/killing/mice
-// Definitions by: Dániel Tar <https://github.com/qcz>, Alan Choi <https://github.com/alanhchoi>, Nic Barker <https://github.com/nicbarker>
+// Definitions by: Dániel Tar <https://github.com/qcz>, Alan Choi <https://github.com/alanhchoi>, Nic Barker <https://github.com/nicbarker>, Mitsuka Hanakura a.k.a ragg <https://github.com/ra-gg>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -13,10 +13,10 @@ interface MousetrapStatic {
     new (el?: Element): MousetrapInstance;
     addKeycodes(keycodes: { [key: number]: string }): void;
     stopCallback: (e: ExtendedKeyboardEvent, element: Element, combo: string) => boolean;
-    bind(keys: string|string[], callback: (e: ExtendedKeyboardEvent, combo: string) => any, action?: string): void;
-    unbind(keys: string|string[], action?: string): void;
-    trigger(keys: string, action?: string): void;
-    reset(): void;
+    bind(keys: string|string[], callback: (e: ExtendedKeyboardEvent, combo: string) => any, action?: string): MousetrapInstance;
+    unbind(keys: string|string[], action?: string): MousetrapInstance;
+    trigger(keys: string, action?: string): MousetrapInstance;
+    reset(): MousetrapInstance;
 
     /** https://craig.is/killing/mice#extensions.global */
     bindGlobal(keyArray: string|string[], callback: (e: ExtendedKeyboardEvent, combo: string) => any, action?: string): void;
@@ -24,11 +24,11 @@ interface MousetrapStatic {
 
 interface MousetrapInstance {
     stopCallback: (e: ExtendedKeyboardEvent, element: Element, combo: string) => boolean;
-    bind(keys: string|string[], callback: (e: ExtendedKeyboardEvent, combo: string) => any, action?: string): void;
-    unbind(keys: string|string[], action?: string): void;
-    trigger(keys: string, action?: string): void;
+    bind(keys: string|string[], callback: (e: ExtendedKeyboardEvent, combo: string) => any, action?: string): this;
+    unbind(keys: string|string[], action?: string): this;
+    trigger(keys: string, action?: string): this;
     handleKey(character: string, modifiers: string[], e: ExtendedKeyboardEvent): void;
-    reset(): void;
+    reset(): this;
 }
 
 declare var Mousetrap: MousetrapStatic;
diff --git a/types/mousetrap/test/index.ts b/types/mousetrap/test/index.ts
index c1477e5e5b..44aef700c0 100644
--- a/types/mousetrap/test/index.ts
+++ b/types/mousetrap/test/index.ts
@@ -1,8 +1,9 @@
 /// <reference types="jquery"/>
 
-Mousetrap.bind('4', function() { console.log('4'); });
-Mousetrap.bind("?", function() { console.log('show shortcuts!'); });
-Mousetrap.bind('esc', function() { console.log('escape'); }, 'keyup');
+Mousetrap
+    .bind('4', function() { console.log('4'); })
+    .bind("?", function() { console.log('show shortcuts!'); })
+    .bind('esc', function() { console.log('escape'); }, 'keyup');
 
 // combinations
 Mousetrap.bind('command+shift+K', function() { console.log('command shift k'); });