diff --git a/examples/asyncio/wamp/rpc/errors/backend.py b/examples/asyncio/wamp/rpc/errors/backend.py
index 90f63d92..b9d65a94 100644
--- a/examples/asyncio/wamp/rpc/errors/backend.py
+++ b/examples/asyncio/wamp/rpc/errors/backend.py
@@ -38,7 +38,7 @@ from autobahn.wamp.exception import ApplicationError
 from autobahn.asyncio.wamp import ApplicationSession, ApplicationRunner
 
 
-@wamp.error("com.myapp.error1")
+@wamp.error(u"com.myapp.error1")
 class AppError1(Exception):
     """
     An application specific exception that is decorated with a WAMP URI,
@@ -69,15 +69,15 @@ class Component(ApplicationSession):
         ##
         def checkname(name):
             if name in ['foo', 'bar']:
-                raise ApplicationError("com.myapp.error.reserved")
+                raise ApplicationError(u"com.myapp.error.reserved")
 
             if name.lower() != name.upper():
                 # forward positional arguments in exceptions
-                raise ApplicationError("com.myapp.error.mixed_case", name.lower(), name.upper())
+                raise ApplicationError(u"com.myapp.error.mixed_case", name.lower(), name.upper())
 
             if len(name) < 3 or len(name) > 10:
                 # forward keyword arguments in exceptions
-                raise ApplicationError("com.myapp.error.invalid_length", min=3, max=10)
+                raise ApplicationError(u"com.myapp.error.invalid_length", min=3, max=10)
 
         yield from self.register(checkname, u'com.myapp.checkname')
 
diff --git a/examples/asyncio/wamp/rpc/errors/frontend.py b/examples/asyncio/wamp/rpc/errors/frontend.py
index db841106..07144087 100644
--- a/examples/asyncio/wamp/rpc/errors/frontend.py
+++ b/examples/asyncio/wamp/rpc/errors/frontend.py
@@ -38,7 +38,7 @@ from autobahn.wamp.exception import ApplicationError
 from autobahn.asyncio.wamp import ApplicationSession, ApplicationRunner
 
 
-@wamp.error("com.myapp.error1")
+@wamp.error(u"com.myapp.error1")
 class AppError1(Exception):
     """
     An application specific exception that is decorated with a WAMP URI,
diff --git a/examples/asyncio/wamp/rpc/slowsquare/backend.py b/examples/asyncio/wamp/rpc/slowsquare/backend.py
index 3103534f..31b5b44e 100644
--- a/examples/asyncio/wamp/rpc/slowsquare/backend.py
+++ b/examples/asyncio/wamp/rpc/slowsquare/backend.py
@@ -53,7 +53,7 @@ class Component(ApplicationSession):
             return x * x
 
         yield from self.register(slowsquare, u'com.math.slowsquare')
-        print("Registered 'com.math.slowsquare'")
+        print("Registered com.math.slowsquare")
 
 
 if __name__ == '__main__':
diff --git a/examples/twisted/wamp/pubsub/basic/backend.py b/examples/twisted/wamp/pubsub/basic/backend.py
index ca5135fa..ad667f7c 100644
--- a/examples/twisted/wamp/pubsub/basic/backend.py
+++ b/examples/twisted/wamp/pubsub/basic/backend.py
@@ -43,7 +43,7 @@ class Component(ApplicationSession):
         print("session attached")
         counter = 0
         while True:
-            print('backend publishing "com.myapp.topic1"', counter)
+            print('backend publishing com.myapp.topic1', counter)
             self.publish(u'com.myapp.topic1', counter)
             counter += 1
             yield sleep(1)
diff --git a/examples/twisted/wamp/pubsub/basic/frontend.py b/examples/twisted/wamp/pubsub/basic/frontend.py
index 01e252d2..6c4d5588 100644
--- a/examples/twisted/wamp/pubsub/basic/frontend.py
+++ b/examples/twisted/wamp/pubsub/basic/frontend.py
@@ -44,7 +44,7 @@ class Component(ApplicationSession):
         print("session attached")
         self.received = 0
         sub = yield self.subscribe(self.on_event, u'com.myapp.topic1')
-        print("Subscribed to 'com.myapp.topic1' with {}".format(sub.id))
+        print("Subscribed to com.myapp.topic1 with {}".format(sub.id))
 
     def on_event(self, i):
         print("Got event: {}".format(i))
diff --git a/examples/twisted/wamp/pubsub/options/backend.py b/examples/twisted/wamp/pubsub/options/backend.py
index e5d993c2..35e8df5d 100644
--- a/examples/twisted/wamp/pubsub/options/backend.py
+++ b/examples/twisted/wamp/pubsub/options/backend.py
@@ -57,7 +57,7 @@ class Component(ApplicationSession):
                 exclude_me=False
             )
             publication = yield self.publish(
-                'com.myapp.topic1', counter,
+                u'com.myapp.topic1', counter,
                 options=pub_options,
             )
             print("Published with publication ID {}".format(publication.id))
diff --git a/examples/twisted/wamp/rpc/errors/backend.py b/examples/twisted/wamp/rpc/errors/backend.py
index 4aaaea3c..63101696 100644
--- a/examples/twisted/wamp/rpc/errors/backend.py
+++ b/examples/twisted/wamp/rpc/errors/backend.py
@@ -66,15 +66,15 @@ class Component(ApplicationSession):
         ##
         def checkname(name):
             if name in ['foo', 'bar']:
-                raise ApplicationError("com.myapp.error.reserved")
+                raise ApplicationError(u"com.myapp.error.reserved")
 
             if name.lower() != name.upper():
                 # forward positional arguments in exceptions
-                raise ApplicationError("com.myapp.error.mixed_case", name.lower(), name.upper())
+                raise ApplicationError(u"com.myapp.error.mixed_case", name.lower(), name.upper())
 
             if len(name) < 3 or len(name) > 10:
                 # forward keyword arguments in exceptions
-                raise ApplicationError("com.myapp.error.invalid_length", min=3, max=10)
+                raise ApplicationError(u"com.myapp.error.invalid_length", min=3, max=10)
 
         yield self.register(checkname, u'com.myapp.checkname')