diff --git a/news.d/bugfix/1663.core.md b/news.d/bugfix/1663.core.md
new file mode 100644
index 000000000..858383568
--- /dev/null
+++ b/news.d/bugfix/1663.core.md
@@ -0,0 +1 @@
+Fix possible issue of plover assuming a different keymap than is actually set for the device and outputting empty translations of unmapped characters after dis- and reconnecting a machine
diff --git a/plover/engine.py b/plover/engine.py
index cc83c5259..74a8d4b52 100644
--- a/plover/engine.py
+++ b/plover/engine.py
@@ -241,6 +241,8 @@ def _update(self, config_update=None, full=False, reset_machine=False):
             self._machine_params = machine_params
             update_keymap = True
             start_machine = True
+            # initialize keyboard emulation again to force update of keymap
+            self._keyboard_emulation.__init__()
         elif self._machine is not None:
             update_keymap = 'system_keymap' in config_update
         if update_keymap: