diff --git a/Cerebrum/modules/no/dfo/client.py b/Cerebrum/modules/no/dfo/client.py
index 111bcef10..d59c2e35c 100644
--- a/Cerebrum/modules/no/dfo/client.py
+++ b/Cerebrum/modules/no/dfo/client.py
@@ -31,11 +31,6 @@
 
 import requests
 import six
-from six.moves.urllib.parse import (
-    quote_plus,
-    urlparse,
-    urljoin as _urljoin,
-)
 
 from Cerebrum.config import loader
 from Cerebrum.config.configuration import (Configuration,
@@ -43,55 +38,11 @@
                                            Namespace)
 from Cerebrum.config.secrets import Secret, get_secret_from_string
 from Cerebrum.config.settings import Boolean, Iterable, String
+from Cerebrum.utils import http as http_utils
 
 logger = logging.getLogger(__name__)
 
 
-def quote_path_arg(arg):
-    return quote_plus(str(arg))
-
-
-def merge_dicts(*dicts):
-    """
-    Combine a series of dicts without mutating any of them.
-
-    >>> merge_dicts({'a': 1}, {'b': 2})
-    {'a': 1, 'b': 2}
-    >>> merge_dicts({'a': 1}, {'a': 2})
-    {'a': 2}
-    >>> merge_dicts(None, None, None)
-    {}
-    """
-    combined = dict()
-    for d in dicts:
-        if not d:
-            continue
-        for k in d:
-            combined[k] = d[k]
-    return combined
-
-
-def urljoin(base_url, *paths):
-    """
-    A sane urljoin.
-
-    Note how urllib.parse.urljoin will assume 'relative to parent' when the
-    base_url doesn't end with a '/':
-
-    >>> urllib.parse.urljoin('https://localhost/foo', 'bar')
-    'https://localhost/bar'
-
-    >>> urljoin('https://localhost/foo', 'bar')
-    'https://localhost/foo/bar'
-
-    >>> urljoin('https://localhost/foo', 'bar', 'baz')
-    'https://localhost/foo/bar/baz'
-    """
-    for path in paths:
-        base_url = _urljoin(base_url.rstrip('/') + '/', path)
-    return base_url
-
-
 class SapEndpoints(object):
     """Get endpoints relative to the SAP API URL."""
 
@@ -119,16 +70,22 @@ def __repr__(self):
         ).format(cls=type(self), obj=self)
 
     def get_employee(self, employee_id):
-        return urljoin(self.baseurl, self.employee_path,
-                       quote_path_arg(employee_id))
+        return http_utils.urljoin(
+            self.baseurl,
+            self.employee_path,
+            http_utils.safe_path(employee_id))
 
     def get_orgenhet(self, org_id):
-        return urljoin(self.baseurl, self.orgenhet_path,
-                       quote_path_arg(org_id))
+        return http_utils.urljoin(
+            self.baseurl,
+            self.orgenhet_path,
+            http_utils.safe_path(org_id))
 
     def get_stilling(self, stilling_id):
-        return urljoin(self.baseurl, self.stilling_path,
-                       quote_path_arg(stilling_id))
+        return http_utils.urljoin(
+            self.baseurl,
+            self.stilling_path,
+            http_utils.safe_path(stilling_id))
 
 
 class SapClient(object):
@@ -163,7 +120,7 @@ def __init__(self,
             orgenhet_path=orgenhet_path,
             stilling_path=stilling_path,
         )
-        self.headers = merge_dicts(self.default_headers, headers)
+        self.headers = http_utils.merge_headers(self.default_headers, headers)
         self.api_headers = {
             'employee': employee_headers,
             'orgenhet': orgenhet_headers,
@@ -190,13 +147,8 @@ def call(self,
              params=None,
              return_response=True,
              **kwargs):
-        headers = merge_dicts(self.headers, headers)
-        if params is None:
-            params = {}
-        logger.debug('Calling %s %s with params=%r',
-                     method_name,
-                     urlparse(url).path,
-                     params)
+        headers = http_utils.merge_headers(self.headers, headers)
+        params = params or {}
         r = self.session.request(method_name,
                                  url,
                                  headers=headers,
@@ -220,7 +172,7 @@ def put(self, url, **kwargs):
     # def get_employee(self, employee_id: str) -> [None, dict]:
     def get_employee(self, employee_id):
         url = self.urls.get_employee(employee_id)
-        headers = merge_dicts(self.headers, self.api_headers['employee'])
+        headers = self.api_headers['employee']
         response = self.get(url, headers=headers)
         if not self._is_api_response(response):
             response.raise_for_status()
@@ -234,7 +186,7 @@ def get_employee(self, employee_id):
     # def get_orgenhet(self, org_id: str) -> [None, dict]:
     def get_orgenhet(self, org_id):
         url = self.urls.get_orgenhet(org_id)
-        headers = merge_dicts(self.headers, self.api_headers['organisasjonId'])
+        headers = self.api_headers['organisasjonId']
         response = self.get(url, headers=headers)
         if response.status_code == 404:
             return None
@@ -246,7 +198,7 @@ def get_orgenhet(self, org_id):
     # def get_stilling(self, stilling_id: str) -> [None, dict]:
     def get_stilling(self, stilling_id):
         url = self.urls.get_stilling(stilling_id)
-        headers = merge_dicts(self.headers, self.api_headers['stilling'])
+        headers = self.api_headers['stilling']
         response = self.get(url, headers=headers)
         if response.status_code == 404:
             return None