diff --git a/params_darwin.go b/params_darwin.go
index 5ac09bb..9b7c99b 100644
--- a/params_darwin.go
+++ b/params_darwin.go
@@ -36,7 +36,7 @@ type PlatformSpecificParams struct {
 	// For detail, please refer
 	// https://github.com/OpenVPN/tap-windows6/blob/master/src/device.c#L431
 	// and https://github.com/songgao/water/pull/13#issuecomment-270341777
-	Network string
+	Network []string
 }
 
 func defaultPlatformSpecificParams() PlatformSpecificParams {
diff --git a/params_linux.go b/params_linux.go
index 59f1394..f543f25 100644
--- a/params_linux.go
+++ b/params_linux.go
@@ -51,7 +51,7 @@ type PlatformSpecificParams struct {
 	// For detail, please refer
 	// https://github.com/OpenVPN/tap-windows6/blob/master/src/device.c#L431
 	// and https://github.com/songgao/water/pull/13#issuecomment-270341777
-	Network string
+	Network []string
 }
 
 func defaultPlatformSpecificParams() PlatformSpecificParams {
diff --git a/params_others.go b/params_others.go
index c5c4f6e..e5bb0c9 100644
--- a/params_others.go
+++ b/params_others.go
@@ -1,3 +1,4 @@
+//go:build !linux && !darwin && !windows
 // +build !linux,!darwin,!windows
 
 package water