diff --git a/src/dict/trie.h b/src/dict/trie.h
index e55e04bc6c..75c375eff4 100644
--- a/src/dict/trie.h
+++ b/src/dict/trie.h
@@ -197,7 +197,7 @@ class Trie : public Dawg {
   // To denote a character class use one of:
   // \c - unichar for which UNICHARSET::get_isalpha() is true (character)
   // \d - unichar for which UNICHARSET::get_isdigit() is true
-  // \n - unichar for which UNICHARSET::get_isdigit() and
+  // \n - unichar for which UNICHARSET::get_isdigit() or
   //      UNICHARSET::isalpha() are true
   // \p - unichar for which UNICHARSET::get_ispunct() is true
   // \a - unichar for which UNICHARSET::get_islower() is true