diff --git a/ChangeLog b/ChangeLog
index 1ad293bd0d..19d1b06deb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sat Oct  4 16:05:49 2014  Rei Odaira  <Rei.Odaira@gmail.com>
+
+	* test/socket/test_unix.rb (TestSocket_UNIXSocket#test_too_long_path):
+	  sockaddr_un.sun_path in AIX is defined as char[1024],
+	  so "a" * 300 is not too long. "a" * 3000 would be enough.
+
 Sat Oct  4 09:12:03 2014  Zachary Scott  <e@zzak.io>
 
 	* ext/win32ole/sample/example*.rb: Add wait input to quit for examples
diff --git a/test/socket/test_unix.rb b/test/socket/test_unix.rb
index 7e82e6cb97..866c83906e 100644
--- a/test/socket/test_unix.rb
+++ b/test/socket/test_unix.rb
@@ -356,8 +356,8 @@ class TestSocket_UNIXSocket < Test::Unit::TestCase
   end
 
   def test_too_long_path
-    assert_raise(ArgumentError) { Socket.sockaddr_un("a" * 300) }
-    assert_raise(ArgumentError) { UNIXServer.new("a" * 300) }
+    assert_raise(ArgumentError) { Socket.sockaddr_un("a" * 3000) }
+    assert_raise(ArgumentError) { UNIXServer.new("a" * 3000) }
   end
 
   def test_abstract_namespace