diff --git a/socket_channel.hpp b/socket_channel.hpp
index d5f140e..2bc7a33 100644
--- a/socket_channel.hpp
+++ b/socket_channel.hpp
@@ -26,7 +26,7 @@
                 sockaddr sockAddr;
                 sockaddr_in6 inAddr;
             };
-            size_t addrSize;
+            socklen_t addrSize;
         };
 
         /**