diff --git a/plugins/inputs/opcua/read_client.go b/plugins/inputs/opcua/read_client.go
index b6f2a0d5a2b61..b765ff72d1c13 100644
--- a/plugins/inputs/opcua/read_client.go
+++ b/plugins/inputs/opcua/read_client.go
@@ -91,7 +91,7 @@ func (o *ReadClient) Connect() error {
 }
 
 func (o *ReadClient) ensureConnected() error {
-	if o.State() == opcua.Disconnected {
+	if o.State() == opcua.Disconnected || o.State() == opcua.Closed {
 		return o.Connect()
 	}
 	return nil