diff --git a/src/openziti/zitilib.py b/src/openziti/zitilib.py
index 802ccb9..a23345b 100644
--- a/src/openziti/zitilib.py
+++ b/src/openziti/zitilib.py
@@ -48,7 +48,7 @@ class SockAddrIn(ctypes.Structure):
     """
     _fields_ = [
         ('_family', ctypes.c_uint8 * 2),
-        ('_port', ctypes.c_int16),
+        ('_port', ctypes.c_uint16),
         ('_addr', ctypes.c_uint8 * 4)
     ]