diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8437036..ac75b57 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1133,6 +1133,8 @@
 				Mechanism 1.
 		conf2		[IA-32] Force use of PCI Configuration
 				Mechanism 2.
+		nommconf	[IA-32,X86_64] Disable use of MMCONFIG for PCI
+				Configuration
 		nosort		[IA-32] Don't sort PCI devices according to
 				order given by the PCI BIOS. This sorting is
 				done to get a device order compatible with