diff --git a/share/man/man7/hier.7 b/share/man/man7/hier.7
index f08edf903069..3e1913dacf82 100644
--- a/share/man/man7/hier.7
+++ b/share/man/man7/hier.7
@@ -264,6 +264,8 @@ GATE GEOM class
 MIRROR GEOM class
 .It Pa nop/
 NOP GEOM class
+.It Pa raid3/
+RAID3 GEOM class
 .It Pa stripe/
 STRIPE GEOM class
 .El