diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0c3a3508c932..2525350e7f0e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2005-01-21  Tom Tromey  <tromey@redhat.com>
+
+	* c-cppbuiltin.c (define__GNUC__): Correct assertion.
+
 2005-01-21  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* tree-cfg.c: Fix comment typos.
diff --git a/gcc/c-cppbuiltin.c b/gcc/c-cppbuiltin.c
index 75effe97e7bf..06904dbb5e52 100644
--- a/gcc/c-cppbuiltin.c
+++ b/gcc/c-cppbuiltin.c
@@ -275,7 +275,7 @@ define__GNUC__ (void)
   if (c_dialect_cxx ())
     builtin_define_with_value_n ("__GNUG__", q, v - q);
 
-  gcc_assert (*v == '.' || ISDIGIT (v[1]));
+  gcc_assert (*v == '.' && ISDIGIT (v[1]));
   
   q = ++v;
   while (ISDIGIT (*v))