diff --git a/Makefile b/Makefile
index 05c4bdc8a..0ba011e2a 100644
--- a/Makefile
+++ b/Makefile
@@ -17,8 +17,7 @@ makefiles = \
   misc/upstart/local.mk \
   doc/manual/local.mk \
   tests/local.mk \
-  tests/plugins/local.mk \
-  src/error-demo/local.mk
+  tests/plugins/local.mk
 
 -include Makefile.config