diff --git a/net/netfilter/ip6t_sockopt.c b/net/netfilter/ip6t_sockopt.c
index c322f3e907..59ecccd8dd 100644
--- a/net/netfilter/ip6t_sockopt.c
+++ b/net/netfilter/ip6t_sockopt.c
@@ -28,6 +28,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
+#include <strings.h>
 
 #include <sys/param.h>
 
diff --git a/net/netfilter/ipt_sockopt.c b/net/netfilter/ipt_sockopt.c
index 0672dbdb29..d02e5dfbb3 100644
--- a/net/netfilter/ipt_sockopt.c
+++ b/net/netfilter/ipt_sockopt.c
@@ -28,6 +28,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
+#include <strings.h>
 
 #include <sys/param.h>