diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60fd2edb05..cda32a6eda 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -403,3 +403,5 @@ if (USE_RAT)
     COMMENT "Checking source with Apache Rat."
   )
 endif()
+
+message(FATAL_ERROR "this is a bad PR")