diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b34e83a0eb86..4ab4c0d6e871 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2010-02-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+	* common.opt (Wlarger-than-): Add Undocumented.
+	
 2010-02-19  Mike Stump  <mikestump@comcast.net>
 
 	* config/t-darwin (gt-darwin.h): Remove as Makefile now handles it.
diff --git a/gcc/common.opt b/gcc/common.opt
index 33182582b720..633ab47a76cd 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -122,7 +122,7 @@ Common Var(warn_inline) Warning
 Warn when an inlined function cannot be inlined
 
 Wlarger-than-
-Common RejectNegative Joined UInteger Warning
+Common RejectNegative Joined UInteger Warning Undocumented
 
 Wlarger-than=
 Common RejectNegative Joined UInteger Warning