diff --git a/godrop.go b/godrop.go
index 292c276..0b9aa5b 100644
--- a/godrop.go
+++ b/godrop.go
@@ -73,6 +73,9 @@ func MultiDrop(c Config, f func() ([]net.Listener, error)) error {
 	if err != nil {
 		return errf(err)
 	}
+	if uid == 0 {
+		return errf(errors.New("unable to drop privileges to uid 0 (root)"))
+	}
 	gid, err := GID(c.Group)
 	if err != nil {
 		return errf(err)