diff --git a/modules/input/japanese/doctor.el b/modules/input/japanese/doctor.el
new file mode 100644
index 000000000..ab953011d
--- /dev/null
+++ b/modules/input/japanese/doctor.el
@@ -0,0 +1,5 @@
+;;; input/japanese/doctor.el -*- lexical-binding: t; -*-
+
+(when (require 'migemo nil t)
+  (unless (executable-find migemo-command)
+    (warn! "Cannot find %S, migemo won't work" migemo-command)))