diff --git a/types/dragula/dragula-tests.ts b/types/dragula/dragula-tests.ts
index 5f143406c3..0e6280ae61 100644
--- a/types/dragula/dragula-tests.ts
+++ b/types/dragula/dragula-tests.ts
@@ -30,3 +30,14 @@ var drake = dragula({
     copy: true
 });
 drake.containers.push(document.querySelector('#container'));
+
+dragula([document.getElementById('left'), document.getElementById('right')])
+    .on('drag', function (el: Element) {
+        el.className = el.className.replace('ex-moved', '');
+    }).on('drop', function (el: Element) {
+        el.className += ' ex-moved';
+    }).on('over', function (el: Element, container: Element) {
+        container.className += ' ex-over';
+    }).on('out', function (el: Element, container: Element) {
+        container.className = container.className.replace('ex-over', '');
+    });
diff --git a/types/dragula/index.d.ts b/types/dragula/index.d.ts
index 51998fb583..925a586971 100644
--- a/types/dragula/index.d.ts
+++ b/types/dragula/index.d.ts
@@ -33,7 +33,7 @@ declare namespace dragula {
         cancel(revert:boolean): void;
         cancel(): void;
         remove(): void;
-        on(events: string, callback: Function): void;
+        on(events: string, callback: Function): Drake;
         destroy(): void;
     }