diff --git a/src/util/unicode.cc b/src/util/unicode.cc
index 1bbf4ee..212e674 100644
--- a/src/util/unicode.cc
+++ b/src/util/unicode.cc
@@ -78,6 +78,7 @@ bool isLegalUnicode(Unicode u)
 
     /*
      * U+2029: Paragraph Separator
+     * TODO: check U+2028 etc
      */
     if(u == 0x2029)
         return false;