diff --git a/Lib/test/test_ftplib.py b/Lib/test/test_ftplib.py
index 4e80daee9a1..b949b695ebf 100644
--- a/Lib/test/test_ftplib.py
+++ b/Lib/test/test_ftplib.py
@@ -50,6 +50,9 @@ class DummyDTPHandler(asynchat.async_chat):
     def push(self, what):
         super(DummyDTPHandler, self).push(what.encode('ascii'))
 
+    def handle_error(self):
+        raise
+
 
 class DummyFTPHandler(asynchat.async_chat):
 
diff --git a/Lib/test/test_smtplib.py b/Lib/test/test_smtplib.py
index 3a9de5b4b70..d0b2b27f03d 100644
--- a/Lib/test/test_smtplib.py
+++ b/Lib/test/test_smtplib.py
@@ -374,6 +374,9 @@ class SimSMTPChannel(smtpd.SMTPChannel):
         else:
             self.push('550 No access for you!')
 
+    def handle_error(self):
+        raise
+
 
 class SimSMTPServer(smtpd.SMTPServer):
 
@@ -392,6 +395,9 @@ class SimSMTPServer(smtpd.SMTPServer):
     def add_feature(self, feature):
         self._extra_features.append(feature)
 
+    def handle_error(self):
+        raise
+
 
 # Test various SMTP & ESMTP commands/behaviors that require a simulated server
 # (i.e., something with more features than DebuggingServer)