diff --git a/bugswarm/common/rest_api/database_api.py b/bugswarm/common/rest_api/database_api.py
index 95373c0..96f74f1 100644
--- a/bugswarm/common/rest_api/database_api.py
+++ b/bugswarm/common/rest_api/database_api.py
@@ -43,7 +43,7 @@ class DatabaseAPI(object):
     """
     This class encapsulates programmatic access to the BugSwarm metadata database via the REST API.
     """
-    _BASE_URL = 'http://api.bugswarm.org/v1/'
+    _BASE_URL = 'http://api.bugswarm.org/v1'
     _ARTIFACTS_RESOURCE = 'artifacts'
     _MINED_BUILD_PAIRS_RESOURCE = 'minedBuildPairs'
     _MINED_PROJECTS_RESOURCE = 'minedProjects'
@@ -464,7 +464,7 @@ def _endpoint(resource: str) -> Endpoint:
             raise TypeError
         if not resource:
             raise ValueError
-        return urljoin(DatabaseAPI.base_url, resource)
+        return '/'.join([DatabaseAPI.base_url, resource])
 
     @staticmethod
     def _artifacts_endpoint() -> Endpoint:
@@ -476,7 +476,7 @@ def _artifact_image_tag_endpoint(image_tag: str) -> Endpoint:
             raise TypeError
         if not image_tag:
             raise ValueError
-        return urljoin(DatabaseAPI._artifacts_endpoint(), image_tag)
+        return '/'.join([DatabaseAPI._artifacts_endpoint(), image_tag])
 
     @staticmethod
     def _mined_build_pairs_endpoint() -> Endpoint:
@@ -488,7 +488,7 @@ def _mined_build_pair_object_id_endpoint(object_id: str) -> Endpoint:
             raise TypeError
         if not object_id:
             raise ValueError
-        return urljoin(DatabaseAPI._mined_build_pairs_endpoint(), object_id)
+        return '/'.join([DatabaseAPI._mined_build_pairs_endpoint(), object_id])
 
     @staticmethod
     def _mined_projects_endpoint() -> Endpoint:
@@ -500,7 +500,7 @@ def _mined_project_repo_endpoint(repo: str) -> Endpoint:
             raise TypeError
         if not repo:
             raise ValueError
-        return urljoin(DatabaseAPI._mined_projects_endpoint(), repo)
+        return '/'.join([DatabaseAPI._mined_projects_endpoint(), repo])
 
     @staticmethod
     def _email_subscribers_endpoint() -> Endpoint:
@@ -512,7 +512,7 @@ def _email_subscriber_email_endpoint(email: str) -> Endpoint:
             raise TypeError
         if not email:
             raise ValueError
-        return urljoin(DatabaseAPI._email_subscribers_endpoint(), email)
+        return '/'.join([DatabaseAPI._email_subscribers_endpoint(), email])
 
     @staticmethod
     def _accounts_endpoint() -> Endpoint:
@@ -524,4 +524,4 @@ def _account_email_endpoint(email: str) -> Endpoint:
             raise TypeError
         if not email:
             raise ValueError
-        return urljoin(DatabaseAPI._accounts_endpoint(), email)
+        return '/'.join([DatabaseAPI._accounts_endpoint(), email])