diff --git a/chrome/content/sogo-connector/general/sync.addressbook.groupdav.js b/chrome/content/sogo-connector/general/sync.addressbook.groupdav.js
index 59886a8..84587ff 100644
--- a/chrome/content/sogo-connector/general/sync.addressbook.groupdav.js
+++ b/chrome/content/sogo-connector/general/sync.addressbook.groupdav.js
@@ -1390,7 +1390,7 @@ new:
         }
 
         if (this.remainingUploads == 0) {
-          this.pendingOperations = 0;
+          this.pendingOperations--;
             //  			dump("decreasing 11 pendingOperations...\n");
             this.checkCallback();
         }