diff --git a/src/include/compat/wctype.h b/src/include/compat/wctype.h
index e0d2c64e..4cdc9d92 100644
--- a/src/include/compat/wctype.h
+++ b/src/include/compat/wctype.h
@@ -44,7 +44,7 @@
 #define iswspace  ucd_isspace
 #define iswupper  ucd_isupper
 #define iswxdigit ucd_isxdigit
-#define tolower ucd_tolower
-#define toupper udc_toupper
+// #define tolower ucd_tolower
+// #define toupper udc_toupper
 
 #endif