diff --git a/wit/runtime/empty.s b/wit/runtime/empty.s
new file mode 100644
index 0000000..5444f20
--- /dev/null
+++ b/wit/runtime/empty.s
@@ -0,0 +1,3 @@
+// This file exists for testing this package without WebAssembly,
+// allowing empty function bodies with a //go:wasmimport directive.
+// See https://pkg.go.dev/cmd/compile for more information.