diff --git a/include/langinfo.h b/include/langinfo.h
index 8c88efccfa29..46e38c724715 100644
--- a/include/langinfo.h
+++ b/include/langinfo.h
@@ -103,7 +103,7 @@ typedef	__nl_item	nl_item;
 #define	YESEXPR		52	/* affirmative response expression */
 #define	NOEXPR		53	/* negative response expression */
 
-#if __BSD_VISIBLE || __XSI_VISIBLE <= 500
+#if __BSD_VISIBLE || (__XSI_VISIBLE && __XSI_VISIBLE <= 500)
 #define	YESSTR		54	/* affirmative response for yes/no queries */
 #define	NOSTR		55	/* negative response for yes/no queries */
 #endif