diff --git a/store/postwoman.js b/store/postwoman.js
index 61712fb65..b7ae1258d 100644
--- a/store/postwoman.js
+++ b/store/postwoman.js
@@ -132,6 +132,12 @@ export const mutations = {
 
   editCollection({ collections }, payload) {
     const { collection, collectionIndex } = payload;
+    const { name } = collection
+    const duplicateCollection = collections.some(item => item.name === name)
+    if (duplicateCollection) {
+      this.$toast.info('Duplicate collection');
+      return;
+    }
     collections[collectionIndex] = collection;
   },