diff --git a/tests/testsuite.at b/tests/testsuite.at
index ed7bf1d2..314e89c9 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -100,6 +100,8 @@ m4_include([pipe.at])
 m4_include([options.at])
 m4_include([options02.at])
 
+m4_include([indexfile.at])
+
 m4_include([append.at])
 m4_include([append01.at])