diff --git a/docs/help/in/ignore.in b/docs/help/in/ignore.in
index a27b23b8..c5b5c342 100644
--- a/docs/help/in/ignore.in
+++ b/docs/help/in/ignore.in
@@ -36,5 +36,7 @@ Some suggestions for ignoring annoying public aways:
     /IGNORE *afk* NICKS
     /IGNORE *away* NICKS
 
+For regular expressions, see `man 7 regex`.
+
 See also: UNIGNORE