diff --git a/man7/cgroups.7 b/man7/cgroups.7
index 0fda6a12b..9ada53949 100644
--- a/man7/cgroups.7
+++ b/man7/cgroups.7
@@ -102,7 +102,7 @@ where version 2 does not yet support those controllers.
 The only restriction here is that a controller can't be simultaneously
 employed in both a cgroups v1 hierarchy and in the cgroups v2 hierarchy.
 .\"
-.SS Cgroups version 1
+.SH CGROUPS VERSION 1
 Under cgroups v1, each controller may be mounted against a separate
 cgroup filesystem that provides its own hierarchical organization of the
 processes on the system.
@@ -492,7 +492,7 @@ At the time when a new cgroup is created,
 the value in this file is inherited from the corresponding file
 in the parent cgroup.
 .\"
-.SS Cgroups version 2
+.SH CGROUPS VERSION 2
 In cgroups v2,
 all mounted controllers reside in a single unified hierarchy.
 While (different) controllers may be simultaneously