diff --git a/pytec/tec_qt.py b/pytec/tec_qt.py
index 2a1e21f..f088c5a 100755
--- a/pytec/tec_qt.py
+++ b/pytec/tec_qt.py
@@ -257,9 +257,11 @@ class MainWindow(QtWidgets.QMainWindow):
             )
             try:
                 await self._connecting_task
-            except (OSError, asyncio.TimeoutError, asyncio.CancelledError):
+            except (OSError, asyncio.TimeoutError, asyncio.CancelledError) as exc:
                 await self.bail()
-                return
+                if isinstance(exc, asyncio.CancelledError):
+                    return
+                raise
             else:
                 await self._on_connection_changed(True)
             finally: