diff --git a/drop/drop-tests.ts b/drop/drop-tests.ts
index cc19621fbd..0da04e9445 100644
--- a/drop/drop-tests.ts
+++ b/drop/drop-tests.ts
@@ -36,3 +36,11 @@ var e = new Drop({
     content: () => greenBox
 });
 
+var Tooltip = Drop.createContext({
+    classPrefix: 'tooltip'
+});
+
+var t = new Tooltip({
+    target: yellowBox,
+    content: () => greenBox
+});
diff --git a/drop/drop.d.ts b/drop/drop.d.ts
index 63f9c8621e..51b05b8c1a 100644
--- a/drop/drop.d.ts
+++ b/drop/drop.d.ts
@@ -27,7 +27,7 @@ declare class Drop {
     public once(event: string, handler: Function, context?: any): void;
     public off(event: string, handler?: Function): void;
 
-    public static createContext(options: Drop.IDropContextOptions): Drop;
+    public static createContext(options: Drop.IDropContextOptions): Drop.IDropConstructor;
 }
 
 declare namespace Drop {
@@ -54,6 +54,10 @@ declare namespace Drop {
         hoverCloseDelay?: number;
         tetherOptions?: Tether.ITetherOptions;
     }
+
+    interface IDropConstructor {
+        new (options: Drop.IDropOptions): Drop;
+    }
 }
 
 declare module "drop" {