diff --git a/test/net/ftp/test_ftp.rb b/test/net/ftp/test_ftp.rb
index a8c3f80..f2cfb47 100644
--- a/test/net/ftp/test_ftp.rb
+++ b/test/net/ftp/test_ftp.rb
@@ -2642,7 +2642,7 @@ def test_use_pasv_invalid_ip
         assert_match(/\AUSER /, commands.shift)
         assert_match(/\APASS /, commands.shift)
         assert_equal("TYPE I\r\n", commands.shift)
-        assert_raise(SocketError) do
+        assert_raises(SocketError) do
           ftp.getbinaryfile("foo", nil)
         end
       ensure