diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index bbf4e7a..9cc5d91 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -218,7 +218,8 @@
         }
     }
     
-    predictors.push_back(new ACPredictor(_scim_config,this));
+    acpredictor = new ACPredictor(_scim_config,this);
+    predictors.push_back(acpredictor);
     
     // �ץ饰���󤬤ʤ���Хǥե����㵡ǽ�ʥ١������饹��Ȥ��ޤ���
     if (!convertors.size()) convertors.push_back(new Convertor(_scim_config));
@@ -261,6 +262,7 @@
         plugins[i].deleteInstance(plugins[i].instance);
         dlclose(plugins[i].dll);
     }
+    delete acpredictor;
 }
 
 /*!
diff --git a/honoka/src/honoka_imengine.h b/honoka/src/honoka_imengine.h
index 13a6f52..3f90832 100644
--- a/honoka/src/honoka_imengine.h
+++ b/honoka/src/honoka_imengine.h
@@ -142,6 +142,7 @@
     stack<WideString> preeditStack;
     Convertor *m_multi;
     vector<Segment> segments;
+    ACPredictor *acpredictor;
 protected:
     bool process_preedit_key_event(const KeyEvent &key);
     bool process_conversion_key_event(const KeyEvent &key);