diff --git a/man2/mmap.2 b/man2/mmap.2
index efc44f4b0..4a2423ab8 100644
--- a/man2/mmap.2
+++ b/man2/mmap.2
@@ -286,7 +286,9 @@ This flag can therefore be used as a way to atomically
 one thread will succeed; all others will report failure.
 Note that older kernels which do not recognize this
 flag will typically (upon detecting a collision with a preexisting mapping)
-fall back to a "non-MAP_FIXED" type of behavior:
+fall back to a "non-\c
+.B MAP_FIXED\c
+" type of behavior:
 they will return an address that is different from the requested address.
 Therefore, backward-compatible software
 should check the returned address against the requested address.