diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 5022bc63863a..8e185b5a2bf6 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1072,7 +1072,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg,
 			goto failure;
 	}
 
-	fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct fib_nh), GFP_KERNEL);
+	fi = kzalloc(struct_size(fi, fib_nh, nhs), GFP_KERNEL);
 	if (!fi)
 		goto failure;
 	fi->fib_metrics = ip_fib_metrics_init(fi->fib_net, cfg->fc_mx,