diff --git a/analytical/templatetags/chartbeat.py b/analytical/templatetags/chartbeat.py
index c7b88c2..dc03a98 100644
--- a/analytical/templatetags/chartbeat.py
+++ b/analytical/templatetags/chartbeat.py
@@ -13,7 +13,7 @@ from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 USER_ID_RE = re.compile(r"^\d+$")
 INIT_CODE = (
-    """<script type="text/javascript">var _sf_startpt=(new Date()).getTime()</script>"""
+    '<script type="text/javascript">var _sf_startpt=(new Date()).getTime()</script>'
 )
 SETUP_CODE = """
     <script type="text/javascript">
diff --git a/analytical/templatetags/crazy_egg.py b/analytical/templatetags/crazy_egg.py
index 34a8f66..4f7ba57 100644
--- a/analytical/templatetags/crazy_egg.py
+++ b/analytical/templatetags/crazy_egg.py
@@ -10,11 +10,9 @@ from analytical.utils import disable_html, get_required_setting, is_internal_ip
 
 ACCOUNT_NUMBER_RE = re.compile(r"^\d+$")
 SETUP_CODE = (
-    '<script type="text/javascript" src="{placeholder_url}">'
-    "</script>".format(
-        placeholder_url="//dnn506yrbagrg.cloudfront.net/pages/scripts/"
-        "%(account_nr_1)s/%(account_nr_2)s.js"
-    )
+    '<script type="text/javascript" '
+    'src="//dnn506yrbagrg.cloudfront.net/pages/scripts/%(account_nr_1)s/%(account_nr_2)s.js">'
+    "</script>"
 )
 USERVAR_CODE = "CE2.set(%(varnr)d, '%(value)s');"
 
diff --git a/analytical/templatetags/google_analytics.py b/analytical/templatetags/google_analytics.py
index f597d9e..dd1d4c9 100644
--- a/analytical/templatetags/google_analytics.py
+++ b/analytical/templatetags/google_analytics.py
@@ -46,7 +46,7 @@ NO_ALLOW_HASH_CODE = "_gaq.push(['_setAllowHash', false]);"
 TRACK_PAGE_VIEW = "_gaq.push(['_trackPageview']);"
 ALLOW_LINKER_CODE = "_gaq.push(['_setAllowLinker', true]);"
 CUSTOM_VAR_CODE = (
-    "_gaq.push(['_setCustomVar', %(index)s, '%(name)s', " "'%(value)s', %(scope)s]);"
+    "_gaq.push(['_setCustomVar', %(index)s, '%(name)s', '%(value)s', %(scope)s]);"
 )
 SITE_SPEED_CODE = "_gaq.push(['_trackPageLoadTime']);"
 ANONYMIZE_IP_CODE = "_gaq.push(['_gat._anonymizeIp']);"
diff --git a/tests/unit/test_tag_chartbeat.py b/tests/unit/test_tag_chartbeat.py
index cb1d6e2..1db2624 100644
--- a/tests/unit/test_tag_chartbeat.py
+++ b/tests/unit/test_tag_chartbeat.py
@@ -22,12 +22,12 @@ class ChartbeatTagTestCaseNoSites(TestCase):
 
 
 @override_settings(
-    INSTALLED_APPS=(
+    INSTALLED_APPS=[
         "analytical",
         "django.contrib.sites",
         "django.contrib.auth",
         "django.contrib.contenttypes",
-    )
+    ]
 )
 @override_settings(CHARTBEAT_USER_ID="12345")
 class ChartbeatTagTestCaseWithSites(TestCase):