diff --git a/libguh/plugin/device.cpp b/libguh/plugin/device.cpp
index 38421420..e5eff79e 100644
--- a/libguh/plugin/device.cpp
+++ b/libguh/plugin/device.cpp
@@ -160,6 +160,9 @@ void Device::setStateValue(const StateTypeId &stateTypeId, const QVariant &value
 {
     for (int i = 0; i < m_states.count(); ++i) {
         if (m_states.at(i).stateTypeId() == stateTypeId) {
+            if (m_states.at(i).value() == value) {
+                return;
+            }
             State newState(stateTypeId, m_id);
             newState.setValue(value);
             m_states[i] = newState;