diff --git a/share/examples/kld/firmware/fwconsumer/fw_consumer.c b/share/examples/kld/firmware/fwconsumer/fw_consumer.c
index 05c93446eed3..8d749fed65df 100644
--- a/share/examples/kld/firmware/fwconsumer/fw_consumer.c
+++ b/share/examples/kld/firmware/fwconsumer/fw_consumer.c
@@ -26,7 +26,6 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <sys/cdefs.h>
 #include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/errno.h>
diff --git a/share/examples/kld/khelp/h_example.c b/share/examples/kld/khelp/h_example.c
index 5bca2b36af50..fea7826a1fb4 100644
--- a/share/examples/kld/khelp/h_example.c
+++ b/share/examples/kld/khelp/h_example.c
@@ -37,7 +37,6 @@
  * documented in an attempt to explain how everything fits together.
  */
 
-#include <sys/cdefs.h>
 #include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/hhook.h>
diff --git a/share/examples/kld/random_adaptor/random_adaptor_example.c b/share/examples/kld/random_adaptor/random_adaptor_example.c
index f462f64cd174..6dd3321d1286 100644
--- a/share/examples/kld/random_adaptor/random_adaptor_example.c
+++ b/share/examples/kld/random_adaptor/random_adaptor_example.c
@@ -27,7 +27,6 @@
  *
  */
 
-#include <sys/cdefs.h>
 #include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/lock.h>
diff --git a/share/examples/modules/skel.c b/share/examples/modules/skel.c
index beb461720dfa..3c2cbd8eb8b1 100644
--- a/share/examples/modules/skel.c
+++ b/share/examples/modules/skel.c
@@ -37,7 +37,6 @@
  *
  */
 
-#include <sys/cdefs.h>
 #include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/systm.h>