diff --git a/Tools/ardupilotwaf/boards.py b/Tools/ardupilotwaf/boards.py
index 154ef72f8b..7ccddaad10 100644
--- a/Tools/ardupilotwaf/boards.py
+++ b/Tools/ardupilotwaf/boards.py
@@ -361,10 +361,10 @@ class Board:
             '-Wpointer-arith',
             '-Wno-unused-parameter',
             '-Wno-missing-field-initializers',
-            '-Wno-reorder',
             '-Wno-redundant-decls',
             '-Wno-unknown-pragmas',
             '-Wno-expansion-to-defined',
+            '-Werror=reorder',
             '-Werror=cast-align',
             '-Werror=attributes',
             '-Werror=format-security',