diff --git a/contrib/libexecinfo/backtrace.c b/contrib/libexecinfo/backtrace.c
index 7dbf0bbb1755..b7a6e775c4bf 100644
--- a/contrib/libexecinfo/backtrace.c
+++ b/contrib/libexecinfo/backtrace.c
@@ -33,7 +33,6 @@ __RCSID("$NetBSD: backtrace.c,v 1.3 2013/08/29 14:58:56 christos Exp $");
 
 #include <sys/param.h>
 #include <assert.h>
-#define _WITH_DPRINTF
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
diff --git a/lib/libc/stdio/dprintf.c b/lib/libc/stdio/dprintf.c
index 7f883ddf3ba6..2eb6abba7978 100644
--- a/lib/libc/stdio/dprintf.c
+++ b/lib/libc/stdio/dprintf.c
@@ -27,7 +27,6 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#define	_WITH_DPRINTF
 #include "namespace.h"
 #include <stdarg.h>
 #include <stdio.h>
diff --git a/sys/contrib/libnv/nvlist.c b/sys/contrib/libnv/nvlist.c
index 4da294d3b497..1f0ae965603b 100644
--- a/sys/contrib/libnv/nvlist.c
+++ b/sys/contrib/libnv/nvlist.c
@@ -52,7 +52,6 @@ __FBSDID("$FreeBSD$");
 #include <stdarg.h>
 #include <stdbool.h>
 #include <stdint.h>
-#define	_WITH_DPRINTF
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>