diff --git a/Makefile.pre.in b/Makefile.pre.in
index 0629e77dc2dae4..a74cb7ebc706d9 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -2184,6 +2184,7 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/certdata/capath \
 		test/cjkencodings \
 		test/crashers \
+		test/configdata \
 		test/data \
 		test/decimaltestdata \
 		test/dtracedata \