diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d6d4d017840..fa159a14329 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-08-25  Nick Clifton  <nickc@redhat.com>
+
+	* config/mn10300/mn10300.h (TARGET_CPU_CPP_BUILTINS): Add
+	assertions of "cpu" and "machine".
+
 2006-08-24  Andrew Pinski  <pinskia@physics.uc.edu>
 
 	PR tree-opt/28807
diff --git a/gcc/config/mn10300/mn10300.h b/gcc/config/mn10300/mn10300.h
index 84dd106f994..ef153e7f585 100644
--- a/gcc/config/mn10300/mn10300.h
+++ b/gcc/config/mn10300/mn10300.h
@@ -37,6 +37,8 @@ Boston, MA 02110-1301, USA.  */
     {						\
       builtin_define ("__mn10300__");		\
       builtin_define ("__MN10300__");		\
+      builtin_assert ("cpu=mn10300");		\
+      builtin_assert ("machine=mn10300");	\
     }						\
   while (0)