diff --git a/tests/Makefile.am b/tests/Makefile.am
index 49a659f..302fa52 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,6 +1,7 @@
 SUBDIRS = \
 	mgcp_client \
 	mgcp \
+	iuup \
 	$(NULL)
 
 # The `:;' works around a Bash 3.2 bug when the output is not writeable.