diff --git a/man7/cgroups.7 b/man7/cgroups.7
index 3c7b8b668..8b0aab3cc 100644
--- a/man7/cgroups.7
+++ b/man7/cgroups.7
@@ -1301,12 +1301,12 @@ The threads of the process can then be spread across
 the threaded subtree by writing their thread IDs (see
 .BR gettid (2))
 to the
-cgroup.threads
+.I cgroup.threads
 files in different cgroups inside the subtree.
 The threads of a process must all reside in the same threaded subtree.
 .PP
 The
-cgroup.threads
+.I cgroup.threads
 file is present in each cgroup (including
 .I domain
 cgroups) and can be read in order to discover the set of threads