diff --git a/Makefile b/Makefile
index f8f820f..14dd7d8 100644
--- a/Makefile
+++ b/Makefile
@@ -92,4 +92,7 @@ get-sources:
 
 verify-sources:
 	$(MAKE) -C livecd-tools verify-sources
+else
+verify-sources:
+	@true
 endif