diff --git a/adafruit_wiznet5k/adafruit_wiznet5k_socket.py b/adafruit_wiznet5k/adafruit_wiznet5k_socket.py
index 375d471..e9f6605 100644
--- a/adafruit_wiznet5k/adafruit_wiznet5k_socket.py
+++ b/adafruit_wiznet5k/adafruit_wiznet5k_socket.py
@@ -256,7 +256,7 @@ def __exit__(self, exc_type, exc_val, exc_tb) -> None:
         _the_interface.release_socket(self._socknum)
         if self._sock_type == SOCK_STREAM:
             _the_interface.write_snir(
-                self._socknum, 0xFF
+                self._socknum, 0xFF & (~wiznet5k.adafruit_wiznet5k.SNIR_DISCON)
             )  # Reset socket interrupt register.
             _the_interface.socket_disconnect(self._socknum)
             mask = (