diff --git a/doc/man/man5/slapd.access.5 b/doc/man/man5/slapd.access.5
index b9556fea60..0fbb1e1fc3 100644
--- a/doc/man/man5/slapd.access.5
+++ b/doc/man/man5/slapd.access.5
@@ -595,7 +595,8 @@ prefix and the
 part, and it is compared against the
 .B <ip>
 portion of the pattern after masking with
-.BR <mask> .
+.BR <mask> :
+\fI((peername & <mask>) == <ip>)\fP.
 As an example, 
 .B peername.ip=127.0.0.1
 and