diff --git a/tools/make.py b/tools/make.py
index ab2d33d514..92ab4f02e6 100644
--- a/tools/make.py
+++ b/tools/make.py
@@ -1424,6 +1424,7 @@ See the make.cfg file for additional build options.
         for failedModuleName in namesOfBuildsFailed:
             print("- {} failed.".format(failedModuleName))
 
+        sys.exit(1)
     else:
         print_green("\Completed with 0 errors.")