diff --git a/man2/recvmmsg.2 b/man2/recvmmsg.2
index 2190ab34a..2d9be2d51 100644
--- a/man2/recvmmsg.2
+++ b/man2/recvmmsg.2
@@ -118,7 +118,7 @@ may overrun by a small amount.)
 If
 .I timeout
 is
-.I NULL
+NULL
 then the operation blocks indefinitely.
 
 A blocking