diff --git a/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml b/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml
index c0cb5a78b7..a5d13b2cdf 100644
--- a/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml
+++ b/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml
@@ -303,7 +303,7 @@ Cura.MachineAction
                 Button
                 {
                     text: catalog.i18nc("@action:button", "Connect")
-                    enabled: (base.selectedDevice && base.completeProperties) ? true : false
+                    enabled: (base.selectedDevice && base.completeProperties && base.selectedDevice.clusterSize > 0) ? true : false
                     onClicked: connectToPrinter()
                 }
             }