diff --git a/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch b/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch
index 7ad843621..e7a7d8772 100644
--- a/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch
+++ b/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch
@@ -2043,3 +2043,20 @@
 +	}
 +	*dst++ = '\0';
 +}
+--- /dev/null
++++ b/include/linux/netfilter/xt_layer7.h
+@@ -0,0 +1,14 @@
++#ifndef _XT_LAYER7_H
++#define _XT_LAYER7_H
++
++#define MAX_PATTERN_LEN 8192
++#define MAX_PROTOCOL_LEN 256
++
++struct xt_layer7_info {
++    char protocol[MAX_PROTOCOL_LEN];
++    char pattern[MAX_PATTERN_LEN];
++    u_int8_t invert;
++    u_int8_t pkt;
++};
++
++#endif /* _XT_LAYER7_H */