diff --git a/infra/conf/transport_internet.go b/infra/conf/transport_internet.go
index 6410ec53..e1387de8 100644
--- a/infra/conf/transport_internet.go
+++ b/infra/conf/transport_internet.go
@@ -1989,10 +1989,10 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
 				splitHTTPSettingsCopy := *splitHTTPSettings
 				hs, err := splitHTTPSettingsCopy.Build()
 				if err != nil {
-					return nil, errors.New("Failed to build XHTTP config for browserDialer validation.").Base(err)
+					return nil, errors.New("failed to build XHTTP config for browserDialer validation.").Base(err)
 				}
 				if splitHTTPConfig, ok := hs.(*splithttp.Config); ok && splitHTTPConfig.Mode != "auto" && splitHTTPConfig.Mode != "packet-up" {
-					return nil, errors.New("sockopt.browserDialer only supports XHTTP mode auto or packet-up, got: ", splitHTTPConfig.Mode)
+					return nil, errors.New("sockopt.browserDialer only supports XHTTP modes \"auto\" or \"packet-up\", got: \"", splitHTTPConfig.Mode, "\"")
 				}
 			}
 		}