diff --git a/src/components/ECharts.vue b/src/components/ECharts.vue
index 404f1f1..6658d41 100644
--- a/src/components/ECharts.vue
+++ b/src/components/ECharts.vue
@@ -53,7 +53,7 @@ const MOUSE_EVENTS = [
 export default {
   props: {
     options: Object,
-    theme: String | Object,
+    theme: [String, Object],
     initOptions: Object,
     group: String,
     autoResize: Boolean