diff --git a/man7/shm_overview.7 b/man7/shm_overview.7
index 9c6ac7923..60e7b71d3 100644
--- a/man7/shm_overview.7
+++ b/man7/shm_overview.7
@@ -92,7 +92,7 @@ to link against the real-time library,
 .IR librt .
 .SS Accessing shared memory objects via the filesystem
 On Linux, shared memory objects are created in a
-.RI ( tmpfs (5))
+.RB ( tmpfs (5))
 virtual filesystem, normally mounted under
 .IR /dev/shm .
 Since kernel 2.6.19, Linux supports the use of access control lists (ACLs)