diff --git a/makedumpfile.8 b/makedumpfile.8
index 1fb9756..e9d4cbe 100644
--- a/makedumpfile.8
+++ b/makedumpfile.8
@@ -121,9 +121,10 @@ configuration, you need to use --diskset option.
.SH OPTIONS
.TP
-fB-c,-lfR
-Compress dump data by each page using zlib for -c option or lzo for -l option.
-(-l option needs USELZO=on when building.)
+fB-c,-l,-pfR
+Compress dump data by each page using zlib for -c option, lzo for -l
+option or snappy for -p option.
+(-l option needs USELZO=on and -p option needs USESNAPPY=on when building)
.br
A user cannot specify this option with -E option, because the ELF format does
not support compressed data.
@@ -492,7 +493,7 @@ Print debugging message.
.TP
fB-hfR
-Show help message and LZO support status (enabled/disabled).
+Show help message and LZO/snappy support status (enabled/disabled).
.TP
fB-vfR
--
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