diff --git a/qml/SidebarHeader.qml b/qml/SidebarHeader.qml
index 3ca6d8ed94..903f451403 100644
--- a/qml/SidebarHeader.qml
+++ b/qml/SidebarHeader.qml
@@ -77,6 +77,7 @@ Column {
         ToolButton {
             id: machineButton;
             text: UM.Application.machineName;
+            tooltip: UM.Application.machineName;
 
             style: UM.Theme.styles.sidebar_header_button;