diff --git a/include/compiler.h b/include/compiler.h
index 3ba5f7c9c..cc38392c8 100644
--- a/include/compiler.h
+++ b/include/compiler.h
@@ -179,7 +179,7 @@ size_t strlcpy(char *, const char *, size_t);
 
 /* C++ and C23 have bool, false, and true as proper keywords */
 #if !defined(__cplusplus) && (__STDC_VERSION__ < 202311L)
-# ifdef HAVE_STDBOOL_H
+# if 1 /* HAVE_STDBOOL_H */
 #  include <stdbool.h>
 # elif defined(HAVE___BOOL)
    typedef _Bool bool;