diff --git a/sys/oom_unix.go b/sys/oom_linux.go
similarity index 98%
rename from sys/oom_unix.go
rename to sys/oom_linux.go
index e5b8dbcef..f24e9af97 100644
--- a/sys/oom_unix.go
+++ b/sys/oom_linux.go
@@ -1,5 +1,3 @@
-// +build !windows
-
 /*
    Copyright The containerd Authors.
 
diff --git a/sys/oom_unix_test.go b/sys/oom_linux_test.go
similarity index 99%
rename from sys/oom_unix_test.go
rename to sys/oom_linux_test.go
index e6be852bc..2b824eb70 100644
--- a/sys/oom_unix_test.go
+++ b/sys/oom_linux_test.go
@@ -1,5 +1,3 @@
-// +build !windows
-
 /*
    Copyright The containerd Authors.
 
diff --git a/sys/oom_windows.go b/sys/oom_unsupported.go
similarity index 86%
rename from sys/oom_windows.go
rename to sys/oom_unsupported.go
index 215c171f6..558340790 100644
--- a/sys/oom_windows.go
+++ b/sys/oom_unsupported.go
@@ -1,3 +1,5 @@
+// +build !linux
+
 /*
    Copyright The containerd Authors.
 
@@ -17,7 +19,9 @@
 package sys
 
 const (
-	// OOMScoreAdjMax is not implemented on Windows
+	// OOMScoreMaxKillable is not implemented on non Linux
+	OOMScoreMaxKillable = 0
+	// OOMScoreAdjMax is not implemented on non Linux
 	OOMScoreAdjMax = 0
 )