diff --git a/terminal_check_unix.go b/terminal_check_unix.go
index cc4fe6e..04748b8 100644
--- a/terminal_check_unix.go
+++ b/terminal_check_unix.go
@@ -1,4 +1,4 @@
-// +build linux aix
+// +build linux aix zos
 // +build !js
 
 package logrus