diff --git a/asyncua/sync.py b/asyncua/sync.py
index 93b576721..8854d4c3d 100644
--- a/asyncua/sync.py
+++ b/asyncua/sync.py
@@ -550,7 +550,7 @@ def get_path(self):
         pass
 
     @syncmethod
-    def read_attributes(self):
+    def read_attributes(self, attrs):
         pass