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-rw-r--r--examples/opcua/waterpump/waterpump-qmlcpp/opcuamachinebackend.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/opcua/waterpump/waterpump-qmlcpp/opcuamachinebackend.cpp b/examples/opcua/waterpump/waterpump-qmlcpp/opcuamachinebackend.cpp
index e6ac84e..858282d 100644
--- a/examples/opcua/waterpump/waterpump-qmlcpp/opcuamachinebackend.cpp
+++ b/examples/opcua/waterpump/waterpump-qmlcpp/opcuamachinebackend.cpp
@@ -72,7 +72,7 @@ OpcUaMachineBackend::OpcUaMachineBackend(QObject *parent)
OpcUaMachineBackend::~OpcUaMachineBackend()
{
- if (m_client)
+ if (m_client && m_client->state() == QOpcUaClient::Connected)
m_client->disconnectFromEndpoint();
}