diff --git a/contrib/win32/w32-posix-prototype/win32posix/win32posix/socketio.c b/contrib/win32/w32-posix-prototype/win32posix/win32posix/socketio.c
index e4a9c92..1d4cc87 100644
--- a/contrib/win32/w32-posix-prototype/win32posix/win32posix/socketio.c
+++ b/contrib/win32/w32-posix-prototype/win32posix/win32posix/socketio.c
@@ -701,7 +701,7 @@ socketio_accept(struct w32_io* pio, struct sockaddr* addr, int* addrlen) {
 			&local_address_len, &remote_address, &remote_address_len);
 		if (remote_address_len) {
 			memcpy(addr, remote_address, remote_address_len);
-			addrlen = remote_address_len;
+			*addrlen = remote_address_len;
 		}
 	}
 	return accept_io;