1 files changed, 1 insertions, 1 deletions
diff --git a/handy.h b/handy.h
index 81f47450d9..de0fa57edd 100644
--- a/handy.h
+++ b/handy.h
@@ -261,7 +261,7 @@ C<strncmp>).
 /*
 =for apidoc Am|bool|isALNUM|char ch
 Returns a boolean indicating whether the C C<char> is an ASCII alphanumeric
-character or digit.
+character (including underscore) or digit.
 
 =for apidoc Am|bool|isALPHA|char ch
 Returns a boolean indicating whether the C C<char> is an ASCII alphabetic