diff --git a/sys/sys/param.h b/sys/sys/param.h
index 1469ece5193..f4db73fec4b 100644
--- a/sys/sys/param.h
+++ b/sys/sys/param.h
@@ -85,12 +85,6 @@
 
 /* More types and definitions used throughout the kernel. */
 #ifdef _KERNEL
-#if 0
-#if (defined(BURN_BRIDGES) || __FreeBSD_version >= 600000) \
-	&& defined(OBSOLETE_IN_6)
-#error "This file contains obsolete code to be removed in 6.0-current"
-#endif
-#endif
 #include <sys/cdefs.h>
 #include <sys/errno.h>
 #ifndef LOCORE