diff --git a/honoka/src/honoka_def.h b/honoka/src/honoka_def.h
index dff816f..161eee0 100644
--- a/honoka/src/honoka_def.h
+++ b/honoka/src/honoka_def.h
@@ -78,6 +78,9 @@
 #define HONOKA_DEFAULT_KEY_SELECT_YOSOKU           "Tab"
 #define HONOKA_CONFIG_KEY_AUTO_CONVERSION          "/IMEngine/Honoka/Key/AutoConversion"
 #define HONOKA_DEFAULT_KEY_AUTO_CONVERSION         "Alt+a"
+#define HONOKA_CONFIG_KEY_RECONVERSION             "/IMEngine/Honoka/ReConversion"
+#define HONOKA_DEFAULT_KEY_RECONVERSION            "Alt+space"
+
 
 #define HONOKA_CONFIG_ALP                          "/IMEngine/Honoka/AutoLookupPopup"
 #define HONOKA_DEFAULT_ALP                         3
diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index 44970f0..dcb2bf2 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -342,6 +342,10 @@
         _scim_config->read(String(HONOKA_CONFIG_KEY_PREV_CONVERTOR),
             String(HONOKA_DEFAULT_KEY_PREV_CONVERTOR)));
 
+    scim_string_to_key_list(k_reconversion,
+        _scim_config->read(String(HONOKA_CONFIG_KEY_RECONVERSION),
+            String(HONOKA_DEFAULT_KEY_RECONVERSION)));
+
     changePreEditor(defaultPreEditor);
 
     // �����ǰ�����³���Ƥ�������
@@ -519,6 +523,19 @@
         return(true);
     } else
 
+    if (k_reconversion.comp(key)) {
+        WideString w;
+        int c;
+        if (get_surrounding_text(w,c)) {
+            if (w.length()) {
+                // delete_surrounding_text()��ȤäƤκ���Ȥ�����͡�
+                startConversion(w);
+                alp_count ++;
+                return(true);
+            }
+        }
+    }
+    
     // �Хåե������Ǥ�̵����硣
     if (m_preeditor->getTextLength()) {
         if (k_conversion_start.comp(key)) {
diff --git a/honoka/src/honoka_imengine.h b/honoka/src/honoka_imengine.h
index 05d95b6..b9e2425 100644
--- a/honoka/src/honoka_imengine.h
+++ b/honoka/src/honoka_imengine.h
@@ -150,6 +150,7 @@
         k_auto_conversion,      // �Ѵ��⡼�ɥȥ���
         k_next_convertor,       // �����Ѵ����󥸥��
         k_prev_convertor,       // �����Ѵ����󥸥��
+        k_reconversion,         // ���Ѵ�
 
         // for Wnn7
         k_conversion_ikeiji,    // �۷����Ѵ�