diff --git a/rpc-pool.go b/rpc-pool.go
index fcd874f..4076d2f 100644
--- a/rpc-pool.go
+++ b/rpc-pool.go
@@ -40,6 +40,9 @@ func NewRemoteGrain(id CartId, address string) *RemoteGrain {
 }
 
 func (g *RemoteGrain) Connect() error {
+	if g == nil {
+		return fmt.Errorf("grain is deleted")
+	}
 	if g.connection == nil {
 		addr := g.Address
 		if !strings.Contains(addr, ":") {