diff --git a/configure.ac b/configure.ac
index 94a0f10..fd29a0f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -121,6 +121,7 @@
   lib/py/Makefile
   if/Makefile
   test/Makefile
+  test/py/Makefile
 ])
 
 AC_OUTPUT