diff --git a/lib/libc/tests/sys/cpuset_test.c b/lib/libc/tests/sys/cpuset_test.c
--- a/lib/libc/tests/sys/cpuset_test.c
+++ b/lib/libc/tests/sys/cpuset_test.c
@@ -25,9 +25,6 @@
  * SUCH DAMAGE.
  */
 
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD");
-
 #include <sys/param.h>
 #include <sys/cpuset.h>
 #include <sys/jail.h>
diff --git a/sys/arm/mv/clk/armada38x_coreclk.c b/sys/arm/mv/clk/armada38x_coreclk.c
--- a/sys/arm/mv/clk/armada38x_coreclk.c
+++ b/sys/arm/mv/clk/armada38x_coreclk.c
@@ -24,9 +24,6 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <sys/cdefs.h>
-__FBSDID("$FressBSD$");
-
 #include <sys/param.h>
 #include <sys/bus.h>
 #include <sys/kernel.h>
diff --git a/sys/dev/enic/enic.h b/sys/dev/enic/enic.h
--- a/sys/dev/enic/enic.h
+++ b/sys/dev/enic/enic.h
@@ -3,9 +3,6 @@
  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
  */
 
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: $");
-
 #ifndef _ENIC_H
 #define _ENIC_H