diff --git a/libc/isystem/net/if.h b/libc/isystem/net/if.h
index 2ed3eca67..dd43a30dd 100644
--- a/libc/isystem/net/if.h
+++ b/libc/isystem/net/if.h
@@ -1,6 +1,5 @@
 #ifndef COSMOPOLITAN_LIBC_ISYSTEM_NET_IF_H_
 #define COSMOPOLITAN_LIBC_ISYSTEM_NET_IF_H_
-#include "libc/sock/if.h"
 #include "libc/sock/struct/ifconf.h"
 #include "libc/sock/struct/ifreq.h"
 #include "libc/sysv/consts/iff.h"
diff --git a/libc/sock/if.h b/libc/sock/if.h
deleted file mode 100644
index f0d21822a..000000000
--- a/libc/sock/if.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef COSMOPOLITAN_LIBC_SOCK_IF_H_
-#define COSMOPOLITAN_LIBC_SOCK_IF_H_
-
-#define IFNAMSIZ 16
-
-#endif /* COSMOPOLITAN_LIBC_SOCK_IF_H_ */
diff --git a/libc/sock/struct/ifreq.h b/libc/sock/struct/ifreq.h
index 9424276e8..3a3bd7209 100644
--- a/libc/sock/struct/ifreq.h
+++ b/libc/sock/struct/ifreq.h
@@ -5,9 +5,7 @@
 COSMOPOLITAN_C_START_
 
 #define IF_NAMESIZE 16
-#ifndef IFNAMSIZ
 #define IFNAMSIZ    IF_NAMESIZE
-#endif
 
 struct ifreq {
   union {