diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index 6958fe7..a470116 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -981,6 +981,7 @@
  */
 bool HonokaInstance::process_conversion_key_event(const KeyEvent &key)
 {
+    preeditCache.clear();
     // �Ѵ����Υ������٥�Ƚ�����
     // ��������
     if (key.is_key_release()) return true;