diff --git a/default/input-methods/typing_setup.py b/default/input-methods/typing_setup.py
index add64095..6364aa1d 100644
--- a/default/input-methods/typing_setup.py
+++ b/default/input-methods/typing_setup.py
@@ -106,12 +106,27 @@ def configure_inputs():
   choose("Input Methods", catalog, current, "input", dict(items))
 
 
+def load_engines(names, catalog):
+  packages = sorted({package for name in names for package in setup.PRESETS.get(name, {}).get("packages", [])})
+  absent = [package for package in packages
+            if subprocess.run(["omarchy-pkg-present", package], capture_output=True).returncode]
+  if absent or any(name not in setup.PRESETS for name in names):
+    labels = ", ".join(catalog.get(name, name) for name in names)
+    raise RuntimeError(f"Install {' '.join(absent) or 'its engine'} to use {labels}")
+  # Fcitx discovers engines only at startup, so one installed while it was
+  # running (by an update, say) needs a restart before it can be selected.
+  setup.run(["omarchy-restart-xcompose"])
+  for name in names:
+    setup.wait_ready(name)
+
+
 def save_inputs(selected, overrides=None):
   group, layout, items = setup.live_group()
   catalog, available = input_catalog(items)
-  missing = [catalog.get(name, name) for name in selected if name not in available]
+  missing = [name for name in selected if name not in available]
   if missing:
-    raise RuntimeError("Restart input after updating Omarchy to use: " + ", ".join(missing))
+    load_engines(missing, catalog)
+    group, layout, items = setup.live_group()
   set_inputs(group, layout, items, input_items(items, selected, overrides))
   # Only a saved engine claims the CJK font fallback, and a failed font write
   # returns the group so the menu's restored checks stay true.
diff --git a/test/shell.d/typing-setup-checks.py b/test/shell.d/typing-setup-checks.py
index 1fcc56c1..21dca265 100644
--- a/test/shell.d/typing-setup-checks.py
+++ b/test/shell.d/typing-setup-checks.py
@@ -63,6 +63,23 @@ class TypingSetupTest(unittest.TestCase):
           typing.save_inputs(["mozc"])
       self.assertFalse((Path(temporary) / "fontconfig/conf.d/50-omarchy-input-method.conf").exists())
 
+  def test_an_engine_installed_after_fcitx_started_loads_on_selection(self):
+    group = ("Default", "us", [["keyboard-us", ""]])
+    present = subprocess.CompletedProcess([], 0)
+    with patch.object(typing.setup, "live_group", return_value=group), patch.object(typing.setup, "available_methods", return_value=[]), patch.object(typing.subprocess, "run", return_value=present), patch.object(typing.setup, "run") as run, patch.object(typing.setup, "wait_ready") as ready, patch.object(typing, "set_inputs") as save, patch.object(typing.setup, "font_default"):
+      typing.save_inputs(["mozc"])
+    run.assert_called_once_with(["omarchy-restart-xcompose"])
+    ready.assert_called_once_with("mozc")
+    self.assertEqual(save.call_args.args[3], [["keyboard-us", ""], ["mozc", ""]])
+
+  def test_an_uninstalled_engine_names_its_package_without_restarting(self):
+    absent = subprocess.CompletedProcess([], 1)
+    with patch.object(typing.setup, "live_group", return_value=("Default", "us", [["keyboard-us", ""]])), patch.object(typing.setup, "available_methods", return_value=[]), patch.object(typing.subprocess, "run", return_value=absent), patch.object(typing.setup, "run") as run, patch.object(typing, "set_inputs") as save:
+      with self.assertRaisesRegex(RuntimeError, "Install fcitx5-mozc to use Japanese"):
+        typing.save_inputs(["mozc"])
+    run.assert_not_called()
+    save.assert_not_called()
+
   def test_failed_font_write_restores_the_input_group(self):
     before = [["keyboard-us", ""]]
     with patch.object(typing.setup, "live_group", return_value=("Default", "us", before)), patch.object(typing.setup, "available_methods", return_value=[["mozc", "Mozc"]]), patch.object(typing, "set_inputs"), patch.object(typing.setup, "font_default", side_effect=OSError("read-only")), patch.object(typing.setup, "live_set") as setter: