diff --git a/man2/swapon.2 b/man2/swapon.2
index 1cecee14a..4c7008a60 100644
--- a/man2/swapon.2
+++ b/man2/swapon.2
@@ -153,10 +153,10 @@ The partition or path must be prepared with
 There is an upper limit on the number of swap files that may be used,
 defined by the kernel constant
 .BR MAX_SWAPFILES .
-Before kernel 2.6.10,
+Before kernel 2.4.10,
 .B MAX_SWAPFILES
 has the value 8;
-since kernel 2.6.10, it has the value 32.
+since kernel 2.4.10, it has the value 32.
 Since kernel 2.6.18, the limit is decreased by 2 (thus: 30)
 if the kernel is built with the
 .B CONFIG_MIGRATION