diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index bc15ea86426e..f5e87ddce3e8 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -6572,7 +6572,7 @@ Kernel parameters
 			them.  If <base> is less than 0x10000, the region
 			is assumed to be I/O ports; otherwise it is memory.
 
-	reserve_mem=	[RAM]
+	reserve_mem=	[MM]
 			Format: nn[KMG]:<align>:<label>
 			Reserve physical memory and label it with a name that
 			other subsystems can use to access it. This is typically