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-rw-r--r--sys/amd64/include/in_cksum.h4
-rw-r--r--sys/i386/include/in_cksum.h4
2 files changed, 0 insertions, 8 deletions
diff --git a/sys/amd64/include/in_cksum.h b/sys/amd64/include/in_cksum.h
index 89ff1097f369..7407b4ad7104 100644
--- a/sys/amd64/include/in_cksum.h
+++ b/sys/amd64/include/in_cksum.h
@@ -37,10 +37,6 @@
#ifndef _MACHINE_IN_CKSUM_H_
#define _MACHINE_IN_CKSUM_H_ 1
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
#include <sys/cdefs.h>
#define in_cksum(m, len) in_cksum_skip(m, len, 0)
diff --git a/sys/i386/include/in_cksum.h b/sys/i386/include/in_cksum.h
index 4f116b8b655c..84e369cf3c81 100644
--- a/sys/i386/include/in_cksum.h
+++ b/sys/i386/include/in_cksum.h
@@ -37,10 +37,6 @@
#ifndef _MACHINE_IN_CKSUM_H_
#define _MACHINE_IN_CKSUM_H_ 1
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
#include <sys/cdefs.h>
#define in_cksum(m, len) in_cksum_skip(m, len, 0)