diff --git a/Makefile b/Makefile
index bf1e64fe77e7..653d4858c8d9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+$(error Break the build!)
 TOP=.
 SUBDIRS=builds runtime fsharp src tools msbuild
 include $(TOP)/Make.config