diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index 4706eae88..16a8a1f2a 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -1,13 +1,6 @@
 #ifndef _SYS_SYSCTL_H
 #define _SYS_SYSCTL_H
 
-/*
- * sysctl() is not supported. Warn non-libc programs including this header.
- */
-#ifndef _LIBC
-#warning Including sysctl.h header. sysctl() is not supported in Minix.
-#endif /* !_LIBC */
-
 /*
  * Used by gmon.
  */