diff --git a/man2/idle.2 b/man2/idle.2
index e12a1a5e1..00c95996d 100644
--- a/man2/idle.2
+++ b/man2/idle.2
@@ -57,7 +57,7 @@ never returns for process 0, and always returns \-1 for a user process.
 .B EPERM
 Always, for a user process.
 .SH VERSIONS
-linux Since 2.3.13, this system call does not exist anymore.
+Since Linux 2.3.13, this system call does not exist anymore.
 .SH "CONFORMING TO"
 This function is Linux-specific, and should not be used in programs
 intended to be portable.