diff --git a/Makefile b/Makefile
index a2f5569..aa2ec71 100644
--- a/Makefile
+++ b/Makefile
@@ -675,6 +675,7 @@
 libs-y += test/
 libs-y += test/dm/
 libs-$(CONFIG_UT_ENV) += test/env/
+libs-$(CONFIG_UT_OVERLAY) += test/overlay/
 
 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)