diff --git a/share/qtcreator/qmldesigner/propertyEditorQmlSources/QtQuick/ItemPane.qml b/share/qtcreator/qmldesigner/propertyEditorQmlSources/QtQuick/ItemPane.qml
index fe29c2ef322..5a984bfb591 100644
--- a/share/qtcreator/qmldesigner/propertyEditorQmlSources/QtQuick/ItemPane.qml
+++ b/share/qtcreator/qmldesigner/propertyEditorQmlSources/QtQuick/ItemPane.qml
@@ -54,7 +54,10 @@ PropertyEditorPane {
                 ExpandingSpacer {}
             }
 
-            PropertyLabel { text: qsTr("Opacity") }
+            PropertyLabel {
+                text: qsTr("Opacity")
+                tooltip: qsTr("Sets the transparency of the component.")
+            }
 
             SecondColumnLayout {
                 SpinBox {