diff --git a/adafruit_minimqtt/adafruit_minimqtt.py b/adafruit_minimqtt/adafruit_minimqtt.py
index 5a21dee6..63cb6c82 100644
--- a/adafruit_minimqtt/adafruit_minimqtt.py
+++ b/adafruit_minimqtt/adafruit_minimqtt.py
@@ -475,7 +475,7 @@ def _send_bytes(
             try:
                 bytes_sent += self._sock.send(view[bytes_sent:])
             except OSError as exc:
-                if exc.errno == EAGAIN:
+                if exc.errno == errno.EAGAIN:
                     continue
                 raise