diff --git a/Makefile b/Makefile
index 591aa79..133b6fb 100644
--- a/Makefile
+++ b/Makefile
@@ -87,9 +87,9 @@
 	@echo "INPUT_FILES=\"${INPUT_FILES}\""
 
 check:
-	PYTHONPATH=. ./utest/test_parser.py
-	PYTHONPATH=. ./utest/test_frontend.py
-	PYTHONPATH=. ./utest/test_test_data.py
+	./utest/test_parser.py
+	./utest/test_frontend.py
+	./utest/test_test_data.py
 
 check-py: python
 	PYTHONPATH=${LOXI_OUTPUT_DIR}/pyloxi:. python py_gen/tests/generic_util.py
diff --git a/utest/test_frontend.py b/utest/test_frontend.py
index 1f284b0..01b8270 100755
--- a/utest/test_frontend.py
+++ b/utest/test_frontend.py
@@ -26,7 +26,13 @@
 # EPL for the specific language governing permissions and limitations
 # under the EPL.
 
+import sys
+import os
 import unittest
+
+root_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), '..')
+sys.path.insert(0, root_dir)
+
 import loxi_front_end.parser as parser
 import loxi_front_end.frontend as frontend
 from loxi_ir import *
diff --git a/utest/test_parser.py b/utest/test_parser.py
index cb22a9c..40d2913 100755
--- a/utest/test_parser.py
+++ b/utest/test_parser.py
@@ -26,7 +26,13 @@
 # EPL for the specific language governing permissions and limitations
 # under the EPL.
 
+import sys
+import os
 import unittest
+
+root_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), '..')
+sys.path.insert(0, root_dir)
+
 import pyparsing
 import loxi_front_end.parser as parser
 
diff --git a/utest/test_test_data.py b/utest/test_test_data.py
index 16cf440..d0ed683 100755
--- a/utest/test_test_data.py
+++ b/utest/test_test_data.py
@@ -26,7 +26,13 @@
 # EPL for the specific language governing permissions and limitations
 # under the EPL.
 
+import sys
+import os
 import unittest
+
+root_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), '..')
+sys.path.insert(0, root_dir)
+
 import test_data
 
 class DataFileTests(unittest.TestCase):