diff --git a/qse/include/qse/cmn/str.h b/qse/include/qse/cmn/str.h
index d14c2239..6a3b7ba4 100644
--- a/qse/include/qse/cmn/str.h
+++ b/qse/include/qse/cmn/str.h
@@ -214,7 +214,7 @@ typedef qse_wchar_t* (*qse_wcssubst_t) (
(c>=QSE_MT('a') && c<=QSE_MT('z'))? ((c-QSE_MT('a')+10=QSE_WT('a') && c<=QSE_WT('z'))? ((c-QSE_WT('a')+10