diff --git a/qt-ui/mainwindow.ui b/qt-ui/mainwindow.ui
index fc1dc2c6f..c6459c703 100644
--- a/qt-ui/mainwindow.ui
+++ b/qt-ui/mainwindow.ui
@@ -376,7 +376,7 @@
                  <item>
                   <widget class="QToolButton" name="profNdl_tts">
                    <property name="toolTip">
-                    <string>Show NTL / TTS</string>
+                    <string>Show NDL / TTS</string>
                    </property>
                    <property name="text">
                     <string>...</string>