diff --git a/src/drag-drop-context.tsx b/src/drag-drop-context.tsx
index a18c541..3d15412 100644
--- a/src/drag-drop-context.tsx
+++ b/src/drag-drop-context.tsx
@@ -579,7 +579,7 @@ const DragDropProvider: ParentComponent<DragDropContextProps> = (
     for (const key in eventMap) {
       let handlerKey = key;
       if (asHandlers) {
-        handlerKey = `on${key}`;
+        handlerKey = `on:${key}`;
       }
       listeners[handlerKey] = (event) => {
         for (const { activator } of eventMap[key]) {