diff --git a/scim-wnn/src/scim_wnn_imengine.cpp b/scim-wnn/src/scim_wnn_imengine.cpp
index cdd3949..1166207 100644
--- a/scim-wnn/src/scim_wnn_imengine.cpp
+++ b/scim-wnn/src/scim_wnn_imengine.cpp
@@ -61,7 +61,7 @@
 
 #define SCIM_CONFIG_WNN_SERVER  "/IMEngine/Wnn/Server"
 #define SCIM_CONFIG_WNN_RC      "/IMEngine/Wnn/Rc"
-#define SCIM_CONFIG_WNN_KEY     "/IMEngine/Wnn/Key"
+#define SCIM_CONFIG_WNN_KEY     "/IMEngine/Wnn/Key/"
 
 static Pointer <WnnFactory> _scim_wnn_factory;
 static ConfigPointer _scim_config;
@@ -270,7 +270,7 @@
         update_preedit_string(wnn.getText(),wnn.getAttributeList());
         update_preedit_caret(wnn.getText().length());
         return(true);
-    }
+    } else
     if (k_commit.comp(key)) {
         if (!m_rk.getTextLength()) {
             return(false);
@@ -279,7 +279,7 @@
         m_rk.reset();
         hide_preedit_string();
         return(true);
-    }
+    } else
     if (k_forward.comp(key) || k_backward.comp(key)) {
         if (!m_rk.getTextLength()) {
             return(false);
@@ -287,7 +287,7 @@
         k_backward.comp(key) ? m_rk.setPos(m_rk.getPos() - 1) : m_rk.setPos(m_rk.getPos() + 1);
         update_preedit_caret(m_rk.getPos());
         return(true);
-    }
+    } else
     if (k_backspace.comp(key)) {
         if (!m_rk.getTextLength()) {
             return(false);
@@ -296,7 +296,7 @@
         update_preedit_string(m_rk.getText());
         update_preedit_caret(m_rk.getPos());
         return(true);
-    }
+    } else
     if (k_delete.comp(key)) {
         if (!m_rk.getTextLength()) {
             return(false);
@@ -305,7 +305,15 @@
         update_preedit_string(m_rk.getText());
         update_preedit_caret(m_rk.getPos());
         return(true);
-    }
+    } else
+    if (k_cancel.comp(key)) {
+        if (!m_rk.getTextLength()) {
+            return(false);
+        }
+        m_rk.reset();
+        hide_preedit_string();
+        return(true);
+    } else
     if (isprint(key.code)) {
         show_preedit_string();
         SCIM_DEBUG_IMENGINE(1) << key.get_key_string() << "\n";