diff --git a/scim-wnn/src/romkan.cpp b/scim-wnn/src/romkan.cpp
index cb1ed68..b3ecf35 100644
--- a/scim-wnn/src/romkan.cpp
+++ b/scim-wnn/src/romkan.cpp
@@ -277,7 +277,10 @@
  */
 void Romkan::toHalf()
 {
+    unsigned int p = text.length();
     convZenHan(text);
+    // �����åȰ���·��
+    if (p != text.length()) setPos(getPos() + (text.length() - p));
     buf.clear();
 }