diff --git a/src/drivers/linux/af_packet.c b/src/drivers/linux/af_packet.c
index 1622c8c0e..65aafc5b1 100644
--- a/src/drivers/linux/af_packet.c
+++ b/src/drivers/linux/af_packet.c
@@ -31,6 +31,7 @@
 #include <ipxe/socket.h>
 
 /* This hack prevents pre-2.6.32 headers from redefining struct sockaddr */
+#define _SYS_SOCKET_H
 #define __GLIBC__ 2
 #include <linux/socket.h>
 #include <linux/if.h>
diff --git a/src/drivers/linux/tap.c b/src/drivers/linux/tap.c
index 979436654..6fe76fd4d 100644
--- a/src/drivers/linux/tap.c
+++ b/src/drivers/linux/tap.c
@@ -31,6 +31,7 @@
 #include <ipxe/socket.h>
 
 /* This hack prevents pre-2.6.32 headers from redefining struct sockaddr */
+#define _SYS_SOCKET_H
 #define __GLIBC__ 2
 #include <linux/socket.h>
 #undef __GLIBC__