diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index b1fa70907ccf3ae472ec6acda282d3e321d4f502..8cc635f4c4f081cea3bbaa303753672b94bc76a0 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1989,7 +1989,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			seconds.  Use this parameter to check at some
 			other rate.  0 disables periodic checking.
 
-	memtest=	[KNL,X86] Enable memtest
+	memtest=	[KNL,X86,ARM] Enable memtest
 			Format: <integer>
 			default : 0 <disable>
 			Specifies the number of memtest passes to be