diff --git a/tasmotonov-gui.py b/tasmotonov-gui.py
index 13e1ee5..3a7b74d 100755
--- a/tasmotonov-gui.py
+++ b/tasmotonov-gui.py
@@ -142,7 +142,7 @@ def select_toggle():
 if __name__ == "__main__":
     app = QApplication(sys.argv)
 
-    ui_file_name = "tasmotonov_gui.ui"
+    ui_file_name = "tasmotonov-gui.ui"
     ui_file = QFile(ui_file_name)
     if not ui_file.open(QIODevice.ReadOnly):
         print(f"Cannot open {ui_file_name}: {ui_file.errorString()}")