diff --git a/pmc.8 b/pmc.8
index db472d3..ff85cd6 100644
--- a/pmc.8
+++ b/pmc.8
@@ -58,6 +58,10 @@ can be used to get a list of supported actions and management IDs.
 
 .SH OPTIONS
 .TP
+.BI \-f " config-file"
+Read configuration from the specified file. No configuration file is read by
+default.
+.TP
 .B \-2
 Select the IEEE 802.3 network transport.
 .TP