diff --git a/src/nft_ext_fullcone.c b/src/nft_ext_fullcone.c
index 96d1feb..d1f2611 100644
--- a/src/nft_ext_fullcone.c
+++ b/src/nft_ext_fullcone.c
@@ -121,7 +121,11 @@ static int exp_event_cb(unsigned int events, const struct nf_exp_event *item)
 }
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
+static int nft_fullcone_validate(const struct nft_ctx *ctx, const struct nft_expr *expr)
+#else
 static int nft_fullcone_validate(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nft_data **data)
+#endif
 {
 	int err;