diff --git a/ChangeLog b/ChangeLog
index 0641158e80..7ff54e2e39 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Jul 17 21:08:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* test/ruby/test_process.rb (test_getpriority, test_setpriority): use
+	  PRIO_PROCESS instead of PRIO_USER.
+
 Thu Jul 17 20:41:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* pack.c (pack_unpack): fix v and V with big endian.
diff --git a/test/ruby/test_process.rb b/test/ruby/test_process.rb
index 9f3c362a25..b45cbcc2dd 100644
--- a/test/ruby/test_process.rb
+++ b/test/ruby/test_process.rb
@@ -946,15 +946,15 @@ class TestProcess < Test::Unit::TestCase
   end
 
   def test_getpriority
-    assert_kind_of(Integer, Process.getpriority(Process::PRIO_USER, 0))
+    assert_kind_of(Integer, Process.getpriority(Process::PRIO_PROCESS, $$))
   rescue NameError, NotImplementedError
   end
 
   def test_setpriority
     if defined? Process::PRIO_USER
       assert_nothing_raised do
-        pr = Process.getpriority(Process::PRIO_USER, 0)
-        Process.setpriority(Process::PRIO_USER, 0, pr)
+        pr = Process.getpriority(Process::PRIO_PROCESS, $$)
+        Process.setpriority(Process::PRIO_PROCESS, $$, pr)
       end
     end
   end