diff --git a/sandbox/namespace_unsupported.go b/sandbox/namespace_unsupported.go
new file mode 100644
index 0000000..3693fe2
--- /dev/null
+++ b/sandbox/namespace_unsupported.go
@@ -0,0 +1,8 @@
+// +build !linux
+
+package sandbox
+
+// GC triggers garbage collection of namespace path right away
+// and waits for it.
+func GC() {
+}