diff --git a/pytec/tec_qt.py b/pytec/tec_qt.py
index 373540a..248fe04 100644
--- a/pytec/tec_qt.py
+++ b/pytec/tec_qt.py
@@ -332,7 +332,7 @@ class MainWindow(QtWidgets.QMainWindow):
 
                 case PIDAutotuneState.STATE_FAILED:
                     self.info_box.display_info_box(
-                        "PID Autotune Failed", f"Channel {ch} PID Autotune is failed."
+                        "PID Autotune Failed", f"Channel {ch} PID Autotune has failed."
                     )
                     self.info_box.show()