diff --git a/node/errors.go b/node/errors.go
index 67547bf691f..f9188f8d997 100644
--- a/node/errors.go
+++ b/node/errors.go
@@ -24,10 +24,9 @@ import (
 )
 
 var (
-	ErrDatadirUsed    = errors.New("datadir already used by another process")
-	ErrNodeStopped    = errors.New("node not started")
-	ErrNodeRunning    = errors.New("node already running")
-	ErrServiceUnknown = errors.New("unknown service")
+	ErrDatadirUsed = errors.New("datadir already used by another process")
+	ErrNodeStopped = errors.New("node not started")
+	ErrNodeRunning = errors.New("node already running")
 
 	datadirInUseErrnos = map[uint]bool{11: true, 32: true, 35: true}
 )