diff --git a/STYLE b/STYLE
index 5f86272..be23cb8 100644
--- a/STYLE
+++ b/STYLE
@@ -7,7 +7,8 @@
 
 * Follow the coding style of the other modules.
 
-* Code should be compilable with -Wall -Werror. There should be no warnings.
+* Code should be compilable with -Wall -Werror -fno-warn-unused-do-bind.
+  There should be no warnings.
 
 * Partial functions should be avoided: the window manager should not
   crash, so do not call `error` or `undefined`