diff --git a/honoka/libhonoka/predictor.cpp b/honoka/libhonoka/predictor.cpp
index cee9f31..16f066e 100644
--- a/honoka/libhonoka/predictor.cpp
+++ b/honoka/libhonoka/predictor.cpp
@@ -89,7 +89,7 @@
  */
 String Predictor::getPropertyName()
 {
-    return getName();
+    return String(_("Predicter"));
 }
 
 /*!
@@ -97,7 +97,7 @@
  */
 String Predictor::getName()
 {
-    return String(_("Predicter"));
+    return String("Predictor");
 }
 
 
diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index 24efa04..55db909 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -309,6 +309,7 @@
     mini_status = _scim_config->read(String(HONOKA_CONFIG_MINISTATUS),HONOKA_DEFAULT_MINISTATUS);
     numkeyselect = _scim_config->read(String(HONOKA_CONFIG_NUMKEY_SELECT),HONOKA_DEFAULT_NUMKEY_SELECT);
     prediction = _scim_config->read(String(HONOKA_CONFIG_PREDICTION),HONOKA_DEFAULT_PREDICTION);
+    if (m_predictor->getName() == "Predictor") prediction = false;
     
     defaultPreEditor = _scim_config->read(String(HONOKA_CONFIG_DEFAULT_PREEDITOR),String(HONOKA_DEFAULT_DEFAULT_PREEDITOR));
     defaultConvertor = _scim_config->read(String(HONOKA_CONFIG_DEFAULT_CONVERTOR),String(HONOKA_DEFAULT_DEFAULT_CONVERTOR));
@@ -472,6 +473,7 @@
 bool HonokaInstance::changePredictor(const String &name)
 {
     // Predictor���ѹ�����᥽�åɡ�
+    if (!prediction) return false;
     for(unsigned int i = 0;i < predictors.size();i ++) {
         if (predictors[i]->getName() == name) {
             m_predictor = predictors[i];
@@ -498,15 +500,15 @@
                 preeditors[i]->getPropertyName(),String(""),_("mode status"));
             m_proplist.push_back(p);
         }
-        
-        p = Property(HONOKA_PROP_PREDICTOR,"",String(""),_("predictor"));
-        m_proplist.push_back(p);
-        for(unsigned int i = 0;i < predictors.size();i ++) {
-            p = Property(String(HONOKA_PROP_PREDICTOR) + String("/") + predictors[i]->getName(),
-                predictors[i]->getPropertyName(),String(""),_("mode status"));
+        if (prediction) {
+            p = Property(HONOKA_PROP_PREDICTOR,"",String(""),_("predictor"));
             m_proplist.push_back(p);
+            for(unsigned int i = 0;i < predictors.size();i ++) {
+                p = Property(String(HONOKA_PROP_PREDICTOR) + String("/") + predictors[i]->getName(),
+                    predictors[i]->getPropertyName(),String(""),_("mode status"));
+                m_proplist.push_back(p);
+            }
         }
-        
         p = Property(HONOKA_PROP_CONVERTOR,"",String(""),_("convertor"));
         m_proplist.push_back(p);
         for(unsigned int i = 0;i < convertors.size();i ++) {
@@ -525,11 +527,13 @@
         it->set_label(m_preeditor->getPropertyName());
     }
     update_property(*it);
-    it = find(m_proplist.begin(),m_proplist.end(),HONOKA_PROP_PREDICTOR);
-    if (it != m_proplist.end()) {
-        it->set_label(m_predictor->getPropertyName());
+    if (prediction) {
+        it = find(m_proplist.begin(),m_proplist.end(),HONOKA_PROP_PREDICTOR);
+        if (it != m_proplist.end()) {
+            it->set_label(m_predictor->getPropertyName());
+        }
+        update_property(*it);
     }
-    update_property(*it);
     it = find(m_proplist.begin(),m_proplist.end(),HONOKA_PROP_CONVERTOR);
     if (it != m_proplist.end()) {
         it->set_label(m_convertor->getPropertyName());