diff --git a/libnetwork/endpoint_info.go b/libnetwork/endpoint_info.go
index 21f2d46e8f..17e93b9765 100644
--- a/libnetwork/endpoint_info.go
+++ b/libnetwork/endpoint_info.go
@@ -413,7 +413,7 @@ func (epj *endpointJoinInfo) UnmarshalJSON(b []byte) error {
 		return err
 	}
 	if v, ok := epMap["gw"]; ok {
-		epj.gw = net.ParseIP(v.(string))
+		epj.gw6 = net.ParseIP(v.(string))
 	}
 	if v, ok := epMap["gw6"]; ok {
 		epj.gw6 = net.ParseIP(v.(string))