diff --git a/server/pse/pse_wasm.go b/server/pse/pse_wasm.go
index 52d379c9..4a6689d8 100644
--- a/server/pse/pse_wasm.go
+++ b/server/pse/pse_wasm.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The NATS Authors
+// Copyright 2022 The NATS Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -11,6 +11,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build wasm
+// +build wasm
+
 package pse
 
 // This is a placeholder for now.
diff --git a/server/signal_wasm.go b/server/signal_wasm.go
index 5bea0b0b..ce9088f7 100644
--- a/server/signal_wasm.go
+++ b/server/signal_wasm.go
@@ -11,6 +11,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build wasm
+// +build wasm
+
 package server
 
 func (s *Server) handleSignals() {
diff --git a/server/sysmem/mem_wasm.go b/server/sysmem/mem_wasm.go
index 0b713955..80636064 100644
--- a/server/sysmem/mem_wasm.go
+++ b/server/sysmem/mem_wasm.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The NATS Authors
+// Copyright 2022 The NATS Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -11,6 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build wasm
 // +build wasm
 
 package sysmem