diff --git a/cmd/dist/dist.go b/cmd/dist/dist.go
index 31c3fc872..1d57de98d 100644
--- a/cmd/dist/dist.go
+++ b/cmd/dist/dist.go
@@ -33,6 +33,9 @@ func getTargets() ([]dist.Target, error) {
 	// Since only we can provide packages to Synology for
 	// distribution, we default to building the "sideload" variant of
 	// packages that we distribute on pkgs.tailscale.com.
+	//
+	// To build for package center, run
+	// ./tool/go run ./cmd/dist build --synology-package-center synology
 	ret = append(ret, synology.Targets(synologyPackageCenter, nil)...)
 	return ret, nil
 }
diff --git a/release/dist/synology/pkgs.go b/release/dist/synology/pkgs.go
index b1c5c3886..a079b980e 100644
--- a/release/dist/synology/pkgs.go
+++ b/release/dist/synology/pkgs.go
@@ -44,7 +44,11 @@ func (t *target) Build(b *dist.Build) ([]string, error) {
 func (t *target) buildSPK(b *dist.Build, inner *innerPkg) ([]string, error) {
 	filename := fmt.Sprintf("tailscale-%s-%s-%d-dsm%d.spk", t.filenameArch, b.Version.Short, b.Version.Synology[t.dsmMajorVersion], t.dsmMajorVersion)
 	out := filepath.Join(b.Out, filename)
-	log.Printf("Building %s", filename)
+	if t.packageCenter {
+		log.Printf("Building %s (for package center)", filename)
+	} else {
+		log.Printf("Building %s (for sideloading)", filename)
+	}
 
 	privFile := fmt.Sprintf("privilege-dsm%d", t.dsmMajorVersion)
 	if t.packageCenter && t.dsmMajorVersion == 7 {