diff --git a/goagen/utils/signal_appengine.go b/goagen/utils/signal_appengine.go
deleted file mode 100644
index 83811ebf..00000000
--- a/goagen/utils/signal_appengine.go
+++ /dev/null
@@ -1,10 +0,0 @@
-//go:build appengine
-// +build appengine
-
-package utils
-
-import (
-	"os"
-)
-
-var defaultSignals = []os.Signal{}
diff --git a/goagen/utils/signal_lin.go b/goagen/utils/signal_lin.go
index 75a1f735..8a4b2ba0 100644
--- a/goagen/utils/signal_lin.go
+++ b/goagen/utils/signal_lin.go
@@ -1,5 +1,5 @@
-//go:build !windows && !appengine
-// +build !windows,!appengine
+//go:build !windows
+// +build !windows
 
 package utils
 
diff --git a/metrics.go b/metrics.go
index 09e256fd..b6840753 100644
--- a/metrics.go
+++ b/metrics.go
@@ -1,5 +1,5 @@
-//go:build !js && !appengine
-// +build !js,!appengine
+//go:build !js
+// +build !js
 
 package goa
 
diff --git a/metrics_appengine.go b/metrics_appengine.go
deleted file mode 100644
index 2eadd518..00000000
--- a/metrics_appengine.go
+++ /dev/null
@@ -1,18 +0,0 @@
-//go:build appengine
-// +build appengine
-
-package goa
-
-import (
-	"time"
-)
-
-// Not supported in Google App Engine
-func IncrCounter(key []string, val float32) {
-	// Do nothing
-}
-
-// Not supported in Google App Engine
-func MeasureSince(key []string, start time.Time) {
-	// Do nothing
-}