diff --git a/tango.py b/tango.py
index 5313cfa..0994257 100644
--- a/tango.py
+++ b/tango.py
@@ -40,7 +40,13 @@ class setup:
 				self.auth_manager.add_password(None, "http://twitter.com", self.username, self.password)
 				self.handler = urllib2.HTTPBasicAuthHandler(self.auth_manager)
 				self.opener = urllib2.build_opener(self.handler)
-				self.authenticated = True
+				try:
+					test_verify = simplejson.load(self.opener.open("http://twitter.com/account/verify_credentials.json"))
+					self.authenticated = True
+				except HTTPError, e:
+					if self.debug is True:
+						print e.headers
+					print "Huh, authentication failed with your provided credentials. Try again? (" + str(e.code) + " failure)"
 	
 	# OAuth functions; shortcuts for verifying the credentials.
 	def fetch_response_oauth(self, oauth_request):
diff --git a/tango3k.py b/tango3k.py
index c707aae..ba3d771 100644
--- a/tango3k.py
+++ b/tango3k.py
@@ -42,7 +42,13 @@ class setup:
 				self.auth_manager.add_password(None, "http://twitter.com", self.username, self.password)
 				self.handler = urllib.request.HTTPBasicAuthHandler(self.auth_manager)
 				self.opener = urllib.request.build_opener(self.handler)
-				self.authenticated = True
+				try:
+					test_verify = simplejson.load(self.opener.open("http://twitter.com/account/verify_credentials.json"))
+					self.authenticated = True
+				except HTTPError as e:
+					if self.debug is True:
+						print(e.headers)
+					print("Huh, authentication failed with your provided credentials. Try again? (" + str(e.code) + " failure)")
 	
 	# OAuth functions; shortcuts for verifying the credentials.
 	def fetch_response_oauth(self, oauth_request):