diff --git a/src/js/background/assignManager.js b/src/js/background/assignManager.js
index 41a787c..eefbbda 100644
--- a/src/js/background/assignManager.js
+++ b/src/js/background/assignManager.js
@@ -89,13 +89,13 @@ window.assignManager = {
       return;
     },
 
-    async remove(pageUrlorUrlKey) {
+    async remove(pageUrlorUrlKey, shouldSync = true) {
       const siteStoreKey = this.getSiteStoreKey(pageUrlorUrlKey);
       // When we remove an assignment we should clear all the exemptions
       this.removeExempted(pageUrlorUrlKey);
       await this.area.remove([siteStoreKey]);
       const syncEnabled = await this.getSyncEnabled();
-      if (syncEnabled) await sync.storageArea.backup({siteStoreKey});
+      if (shouldSync && syncEnabled) await sync.storageArea.backup({siteStoreKey});
       return;
     },
 
diff --git a/src/js/background/sync.js b/src/js/background/sync.js
index b34ea00..6dfb629 100644
--- a/src/js/background/sync.js
+++ b/src/js/background/sync.js
@@ -493,9 +493,9 @@ async function reconcileSiteAssignments() {
     await sync.storageArea.getDeletedSiteList();
   for(const siteStoreKey of deletedSiteList) {
     if (Object.prototype.hasOwnProperty.call(assignedSitesLocal,siteStoreKey)) {
-      assignManager
+      await assignManager
         .storageArea
-        .remove(siteStoreKey);
+        .remove(siteStoreKey, false);
     }
   }