#include <net/route.h>
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter/xt_TEE.h>
-
 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
-#      define WITH_CONNTRACK 1
-#      include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_conntrack.h>
 #endif
 
 struct xt_tee_priv {
        if (skb == NULL)
                return XT_CONTINUE;
 
-#ifdef WITH_CONNTRACK
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
        /* Avoid counting cloned packets towards the original connection. */
        nf_conntrack_put(skb->nfct);
        skb->nfct     = &nf_ct_untracked_get()->ct_general;
        if (skb == NULL)
                return XT_CONTINUE;
 
-#ifdef WITH_CONNTRACK
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
        nf_conntrack_put(skb->nfct);
        skb->nfct     = &nf_ct_untracked_get()->ct_general;
        skb->nfctinfo = IP_CT_NEW;