diff --git a/test/socket/test_socket.rb b/test/socket/test_socket.rb
index 5724938f6b..3e293d373c 100644
--- a/test/socket/test_socket.rb
+++ b/test/socket/test_socket.rb
@@ -61,7 +61,7 @@ class TestBasicSocket < Test::Unit::TestCase
   def test_listen
     s = nil
     log = Object.new
-    class << log; self end.fcall(:define_method, :to_int) {
+    class << log; self end.send(:define_method, :to_int) {
       s.close
       2
     }
diff --git a/test/socket/test_udp.rb b/test/socket/test_udp.rb
index 3f5f55a467..602adccf1c 100644
--- a/test/socket/test_udp.rb
+++ b/test/socket/test_udp.rb
@@ -21,7 +21,7 @@ class TestUDPSocket < Test::Unit::TestCase
   def test_bind # [ruby-dev:25057]
     s = UDPSocket.new
     host = Object.new
-    class << host; self end.fcall(:define_method, :to_str) {
+    class << host; self end.send(:define_method, :to_str) {
       s.close
       "127.0.0.1"
     }