diff --git a/genkeys.go b/genkeys.go
index 541e97e5a..d36ca4af9 100644
--- a/genkeys.go
+++ b/genkeys.go
@@ -827,10 +827,10 @@ func main() {
 		case filepath.Join("internal", "ui", "keys_mobile.go"):
 			buildTag = "//go:build (android || ios) && !nintendosdk && !ebitencbackend" +
 				"\n// +build android ios" +
-				"\n// +build !nintendosdk && !ebitencbackend"
+				"\n// +build !nintendosdk,!ebitencbackend"
 		case filepath.Join("internal", "ui", "keys_glfw.go"):
 			buildTag = "//go:build !android && !ios && !js && !nintendosdk && !ebitencbackend" +
-				"\n// +build !android,!ios,!js,!nintendosdk && !ebitencbackend"
+				"\n// +build !android,!ios,!js,!nintendosdk,!ebitencbackend"
 		}
 		// NOTE: According to godoc, maps are automatically sorted by key.
 		if err := tmpl.Execute(f, struct {