diff --git a/client/mocknetconn_test.go b/client/mocknetconn_test.go
index 76835f9..992a41c 100644
--- a/client/mocknetconn_test.go
+++ b/client/mocknetconn_test.go
@@ -136,11 +136,11 @@ func (m *mockNetConn) Close() error {
 }
 
 func (m *mockNetConn) LocalAddr() net.Addr {
-	return &net.IPAddr{net.IPv4(127, 0, 0, 1)}
+	return &net.IPAddr{IP: net.IPv4(127, 0, 0, 1)}
 }
 
 func (m *mockNetConn) RemoteAddr() net.Addr {
-	return &net.IPAddr{net.IPv4(127, 0, 0, 1)}
+	return &net.IPAddr{IP: net.IPv4(127, 0, 0, 1)}
 }
 
 func (m *mockNetConn) SetDeadline(t time.Time) error {