diff --git a/launcher/ui/MainWindow.ui b/launcher/ui/MainWindow.ui
index 3967709a..a328a92f 100644
--- a/launcher/ui/MainWindow.ui
+++ b/launcher/ui/MainWindow.ui
@@ -336,7 +336,7 @@
     <string>&amp;Kill</string>
    </property>
    <property name="toolTip">
-    <string>Kill the running instance</string>
+    <string>Kill the running instance.</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+K</string>