diff --git a/udev.8 b/udev.8
index c78fd4a32b..1ca42982ea 100644
--- a/udev.8
+++ b/udev.8
@@ -201,6 +201,9 @@ field for the obvious reason.)
 Use the devfs style disk name for this device.
 For partitions, this will result in 'part%n'
 If this is not a partition, it will result in 'disc'.
+.TP
+.B %%
+The '%' char itself.
 .P
 .RI "A sample " udev.rules " might look like this:"
 .sp