pass proper arguments to method callbacks

1 files changed, 1 insertions, 1 deletions

diff --git a/websocket/_app.py b/websocket/_app.py
index bdfd7b1..b47ff8e 100644
--- a/websocket/_app.py
+++ b/websocket/_app.py
@@ -325,7 +325,7 @@ class WebSocketApp(object):
     def _callback(self, callback, *args):
         if callback:
             try:
-                if inspect.ismethod(callback):
+                if inspect.ismethod(callback) and isinstance(callback.__self__, WebSocketApp):
                     callback(*args)
                 else:
                     callback(self, *args)