diff --git a/example/mocking_data_source.py b/example/mocking_data_source.py
index a830475..1fd7ae2 100644
--- a/example/mocking_data_source.py
+++ b/example/mocking_data_source.py
@@ -30,7 +30,7 @@ def recv(self, size):
         current_bytes = self.remaining_bytes[:size]
         self.remaining_bytes = self.remaining_bytes[size:]
 
-        if self.remaining_bytes is b'':
+        if self.remaining_bytes == b'':
             self.frame = None
             self.remaining_bytes = None