diff --git a/Makefile.tests b/Makefile.tests
index 86dd12d..fe0f5ca 100644
--- a/Makefile.tests
+++ b/Makefile.tests
@@ -1,64 +1,61 @@
 test-connect-db:
 	psql -d $(DB_TEST)
 
 test-create-db:
 	cd $(SQL_FOLDER) && make clean initdb DBNAME=$(DB_TEST)
 
 test-drop-db:
 	cd $(SQL_FOLDER) && make clean dropdb DBNAME=$(DB_TEST)
 
 tests:
 	PYTHONPATH=$(_PYPATH) make test
 
 test-run-back:
 	PYTHONPATH=$(_PYPATH) $(SWH_BACK) $(FLAG) --config ./resources/test/back.ini
 
 test-http:
 	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_http.py
 
 test-swhrepo:
 	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_swhrepo.py
 
 test-api:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api*.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api*.py
 
 test-api-post-per-type:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_post_*.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_post_*.py
 
 test-api-content:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_content.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_content.py
 
 test-api-directory:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_directory.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_directory.py
 
 test-api-revision:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_revision.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_revision.py
 
 test-api-release:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_release.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_release.py
 
 test-api-occurrence:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_occurrence.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_occurrence.py
 
 test-api-home:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_home.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_home.py
 
 test-api-origin:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_origin.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_origin.py
 
 test-api-person:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_person.py
-
-test-api-pickle:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_pickle.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_api_person.py
 
 test-file:
-	$(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_file.py
+	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_file.py
 
 test-remote-loader:
 	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_remote_loader.py
 
 test-local-loader:
 	PYTHONPATH=$(_PYPATH) $(NOSE) $(NOSEFLAGS) $(TESTDIR)/test_local_loader.py
 
 test-loaders: test-local-loader test-remote-loader