diff --git a/honoka/plugins/romkan.cpp b/honoka/plugins/romkan.cpp
index ae1565f..7580647 100644
--- a/honoka/plugins/romkan.cpp
+++ b/honoka/plugins/romkan.cpp
@@ -689,7 +689,13 @@
         insert(key.get_ascii_code());
         return true;
     }
-    if (key.get_unicode_code()) return true;
+    if (key.get_unicode_code() && (!key.is_alt_down()) && (!key.is_control_down())) {
+        buf.clear();
+        rmChars.clear();
+        text = getText(true) + key.get_unicode_code();
+        pos ++;
+        return true;
+    }
     return false;
 }