diff --git a/test/net/ftp/test_ftp.rb b/test/net/ftp/test_ftp.rb
index 6976f11b8f..6f726e1090 100644
--- a/test/net/ftp/test_ftp.rb
+++ b/test/net/ftp/test_ftp.rb
@@ -2080,6 +2080,8 @@ EOF
   end
 
   def test_abort_tls
+    return unless defined?(OpenSSL)
+
     commands = []
     server = create_ftp_server { |sock|
       sock.print("220 (test_ftp).\r\n")
@@ -2124,6 +2126,8 @@ EOF
         ftp.abort
         assert_equal("ABOR\r\n", commands.shift)
         assert_equal(nil, commands.shift)
+      rescue RuntimeError, LoadError
+        # skip (require openssl)
       ensure
         ftp.close if ftp
       end
diff --git a/test/net/smtp/test_smtp.rb b/test/net/smtp/test_smtp.rb
index 98b7cad345..23e1542d8f 100644
--- a/test/net/smtp/test_smtp.rb
+++ b/test/net/smtp/test_smtp.rb
@@ -135,6 +135,8 @@ module Net
         sock.close if sock
         servers.each(&:close)
       end
+    rescue LoadError
+      # skip (require openssl)
     end
 
     def test_tls_connect_timeout
@@ -151,6 +153,8 @@ module Net
           smtp.start do
           end
         end
+      rescue LoadError
+        # skip (require openssl)
       ensure
         sock.close if sock
         servers.each(&:close)