diff --git a/limit/limit.go b/limit/limit.go
index 11fb867..5f87f47 100644
--- a/limit/limit.go
+++ b/limit/limit.go
@@ -1,4 +1,4 @@
-// +build windows plan9
+// +build !linux
 
 package limit
 
diff --git a/limit/limit_unix.go b/limit/limit_unix.go
index 6365d54..25f03fc 100644
--- a/limit/limit_unix.go
+++ b/limit/limit_unix.go
@@ -1,5 +1,4 @@
-// +build !windows
-// +build !plan9
+// +build linux
 
 package limit