diff --git a/man2/getrlimit.2 b/man2/getrlimit.2
index f2c529752..c6b6e4b08 100644
--- a/man2/getrlimit.2
+++ b/man2/getrlimit.2
@@ -176,7 +176,8 @@ perform an orderly termination upon first receipt of
 .BR SIGXCPU .)
 .TP
 .B RLIMIT_DATA
-This is the maximum size of the process's data segment (initialized data,
+This is the maximum size (in bytes)
+of the process's data segment (initialized data,
 uninitialized data, and heap).
 This limit affects calls to
 .BR brk (2)