diff --git a/ChangeLog b/ChangeLog
index 7e665acd7f..4c750ebd3a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,9 @@
-Fri Aug  3 06:17:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Fri Aug  3 06:40:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/mkmf.rb: more verbose message.  [ruby-Bugs-12766]
 
+	* lib/mkmf.rb (have_type): suppress a warning with -Wall.
+
 Fri Aug  3 00:00:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* bignum.c (big2str_table): base cannot be 0 or 1.
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 7e20545994..fbc0f56618 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -793,7 +793,7 @@ def have_type(type, headers = nil, opt = "", &b)
 #{headers}
 /*top*/
 typedef #{type} conftest_type;
-static conftest_type conftestval[sizeof(conftest_type)?1:-1];
+int conftestval[sizeof(conftest_type)?1:-1];
 SRC
       $defs.push(format("-DHAVE_TYPE_%s", type.strip.upcase.tr_s("^A-Z0-9_", "_")))
       true