diff --git a/libosmocore/configure.in b/libosmocore/configure.in
index 8c0fe67..d9fa6e8 100644
--- a/libosmocore/configure.in
+++ b/libosmocore/configure.in
@@ -34,4 +34,7 @@
 	include/osmocore/Makefile
 	include/Makefile
 	src/Makefile
+	tests/Makefile
+	tests/timer/Makefile
+	tests/sms/Makefile
 	Makefile)