diff --git a/src/index.js b/src/index.js
index d525d3a..5e29cd2 100644
--- a/src/index.js
+++ b/src/index.js
@@ -18,6 +18,7 @@ export default function VueRx (Vue) {
   Vue.prototype.$subscribeTo = subscribeTo
   Vue.prototype.$eventToObservable = eventToObservable
   Vue.prototype.$createObservableMethod = createObservableMethod
+  Vue.config.optionMergeStrategies.subscriptions = Vue.config.optionMergeStrategies.data;
 }
 
 // auto install