diff --git a/src/mixin.js b/src/mixin.js
index 8c6c14d39..3d5c5fb49 100644
--- a/src/mixin.js
+++ b/src/mixin.js
@@ -24,7 +24,9 @@ export default function (Vue) {
     const options = this.$options
     // store injection
     if (options.store) {
-      this.$store = options.store
+      this.$store = typeof options.store === 'function'
+        ? options.store()
+        : options.store
     } else if (options.parent && options.parent.$store) {
       this.$store = options.parent.$store
     }