diff --git a/monasca_agent/collector/checks/__init__.py b/monasca_agent/collector/checks/__init__.py
index fe8ef133..95bb3898 100644
--- a/monasca_agent/collector/checks/__init__.py
+++ b/monasca_agent/collector/checks/__init__.py
@@ -12,4 +12,4 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from check import AgentCheck  # noqa
+from monasca_agent.collector.checks.check import AgentCheck  # noqa
diff --git a/monasca_agent/collector/checks/collector.py b/monasca_agent/collector/checks/collector.py
index d0c92ac2..3a4bb941 100644
--- a/monasca_agent/collector/checks/collector.py
+++ b/monasca_agent/collector/checks/collector.py
@@ -220,7 +220,7 @@ class Collector(util.Dimensions):
         # Sort by the last collection time so the checks that take the
         # least amount of time are run first so they are more likely to
         # complete within the check_frequency
-        sorted_checks = sorted(self.collection_times.itervalues(),
+        sorted_checks = sorted(self.collection_times.values(),
                                key=lambda x: x['last_collect_time'])
         for entry in sorted_checks:
             check = entry['check']
diff --git a/monasca_agent/collector/checks/services_checks.py b/monasca_agent/collector/checks/services_checks.py
index 5428c44f..7a72ace9 100644
--- a/monasca_agent/collector/checks/services_checks.py
+++ b/monasca_agent/collector/checks/services_checks.py
@@ -13,7 +13,7 @@
 
 import collections
 from concurrent import futures
-import Queue
+from queue import Queue
 import threading
 
 import eventlet
@@ -60,7 +60,7 @@ class ServicesCheck(monasca_agent.collector.checks.AgentCheck):
         # A dictionary to keep track of service statuses
         self.statuses = {}
         self.notified = {}
-        self.resultsq = Queue.Queue()
+        self.resultsq = Queue()
         self.nb_failures = 0
         self.pool = None
 
diff --git a/monasca_agent/collector/daemon.py b/monasca_agent/collector/daemon.py
index 5432dc18..3db2fa72 100644
--- a/monasca_agent/collector/daemon.py
+++ b/monasca_agent/collector/daemon.py
@@ -23,9 +23,9 @@ import sys
 import time
 
 # Custom modules
-import checks.collector
-import checks.services_checks as status_checks
-import jmxfetch
+from monasca_agent.collector.checks.collector import Collector
+import monasca_agent.collector.checks.services_checks as status_checks
+from monasca_agent.collector import jmxfetch
 import monasca_agent.common.config as cfg
 import monasca_agent.common.daemon
 import monasca_agent.common.emitter
@@ -103,7 +103,7 @@ class CollectorDaemon(monasca_agent.common.daemon.Daemon):
         # Load the checks_d checks
         checksd = util.load_check_directory()
 
-        self.collector = checks.collector.Collector(
+        self.collector = Collector(
             config, monasca_agent.common.emitter.http_emitter, checksd)
 
         check_frequency = int(config['check_freq'])
diff --git a/monasca_agent/common/emitter.py b/monasca_agent/common/emitter.py
index 0c23d2d8..d03d7a3f 100644
--- a/monasca_agent/common/emitter.py
+++ b/monasca_agent/common/emitter.py
@@ -13,7 +13,11 @@
 
 from hashlib import md5
 import json
-import urllib2
+from six.moves.urllib.error import HTTPError
+from six.moves.urllib.request import build_opener
+from six.moves.urllib.request import ProxyHandler
+from six.moves.urllib.request import Request
+from six import PY3
 
 
 def post_headers(payload):
@@ -37,15 +41,17 @@ def http_emitter(message, log, url):
         partial_payload.append(measurement)
 
     payload = json.dumps(partial_payload)
+    if PY3:
+        payload = payload.encode('utf-8')
     url = "%s/intake" % url
     headers = post_headers(payload)
 
     try:
         # Make sure no proxy is autodetected for this localhost connection
-        proxy_handler = urllib2.ProxyHandler({})
+        proxy_handler = ProxyHandler({})
         # Should this be installed as the default opener and reused?
-        opener = urllib2.build_opener(proxy_handler)
-        request = urllib2.Request(url, payload, headers)
+        opener = build_opener(proxy_handler)
+        request = Request(url, payload, headers)
         response = None
         try:
             response = opener.open(request)
@@ -57,7 +63,7 @@ def http_emitter(message, log, url):
         finally:
             if response:
                 response.close()
-    except urllib2.HTTPError as e:
+    except HTTPError as e:
         if e.code == 202:
             log.debug("http payload accepted")
         else: