diff --git a/test/__init__.py b/test/__init__.py
index 2f020e7b..989934b9 100644
--- a/test/__init__.py
+++ b/test/__init__.py
@@ -2,6 +2,11 @@
 # Licensed under the terms of BSD 2-Clause, see LICENSE for details.
 
 import pytest
+import os
+import sys
+
+# Use 'our' version of the module.
+sys.path.insert(0, os.path.abspath('src'))
 
 # Enable introspection on assertions in testenv
 pytest.register_assert_rewrite('test.testenv')