diff --git a/application/core/filters.py b/application/core/filters.py
index b3caef90..a2e23117 100644
--- a/application/core/filters.py
+++ b/application/core/filters.py
@@ -193,7 +193,7 @@ def uri_encode(uri_template, kwarg_list):
 
 # TODO  Non pythonic naming syntax
 # Takes a URI and appends a specified parameter to it
-def appendUriParam(uri, param):
+def append_uri_param(uri, param):
     uri_parts = list(urlparse.urlparse(uri))
     query = dict(urlparse.parse_qsl(uri_parts[4]))
     query.update(param)
@@ -221,7 +221,7 @@ def hash_file(filename):
 def cacheBust(uri):
     filename = uri.split("?")[0]
     sha = hash_file(filename)
-    return appendUriParam(uri, {"v": sha})
+    return append_uri_param(uri, {"v": sha})
 
 
 def extract_component_key(json_ref):
diff --git a/tests/unit/core/test_filters.py b/tests/unit/core/test_filters.py
index 40acae4a..38d96427 100644
--- a/tests/unit/core/test_filters.py
+++ b/tests/unit/core/test_filters.py
@@ -4,7 +4,7 @@
     remove_values_from_param_dict,
     make_url_param_str,
     cacheBust,
-    appendUriParam,
+    append_uri_param,
     hash_file,
 )
 
@@ -102,15 +102,15 @@ def test_cacheBust_params():
     assert len(hash) == 40
 
 
-def test_appendUriParam():
+def test_append_uri_param():
     uri = "static/javascript/myCookScript.js"
     param = {"key": "value"}
-    result = appendUriParam(uri, param)
+    result = append_uri_param(uri, param)
     assert result == "static/javascript/myCookScript.js?key=value"
 
     uri = "static/javascript/myCookScript.js?key=value"
     param = {"differentKey": "differentValue"}
-    result = appendUriParam(uri, param)
+    result = append_uri_param(uri, param)
     assert (
         result
         == "static/javascript/myCookScript.js?key=value&differentKey=differentValue"