diff --git a/bin/sh/sh.1 b/bin/sh/sh.1
index 6fa59ede50c..3c2fa9c356c 100644
--- a/bin/sh/sh.1
+++ b/bin/sh/sh.1
@@ -362,6 +362,13 @@ The following is a list of valid operators:
 .It Li <& Ta Li >& Ta Li <<- Ta Li >|
 .El
 .El
+.Pp
+The character
+.Ql #
+introduces a comment if used at the beginning of a word.
+The word starting with
+.Ql #
+and the rest of the line are ignored.
 .Ss Quoting
 Quoting is used to remove the special meaning of certain characters
 or words to the shell, such as operators, whitespace, keywords,