diff --git a/test/Makefile.am b/test/Makefile.am
index 2470018..184d52b 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -8,7 +8,7 @@ MACOSX_DEPLOYMENT_TARGET=@CONFIGURE_MACOSX_DEPLOYMENT_TARGET@
 if WITH_PYTHON
   TEST_CSCRIPTS      = test_cscripts.sh
   TEST_PYTHON_SCRIPT = test_python.py
-  TEST_PYTHON_ENV    = PYTHONPATH=$(top_builddir)/pyext:$(top_builddir)/scripts:$(pythondir):$(PYTHONPATH)
+  TEST_PYTHON_ENV    = PYTHONPATH=$(top_builddir)/pyext:$(top_builddir)/scripts:$(pythondir):$(pyexecdir):$(PYTHONPATH)
 endif
 
 # Set test environment