diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index f3d50d369bbe8ac34e31552fce489b0451722940..4cff4c043d11911074757826fc85b7354ee6ea72 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -320,6 +320,8 @@ mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp,
 						lpm_tree);
 	if (err)
 		goto err_left_struct_set;
+	memcpy(&lpm_tree->prefix_usage, prefix_usage,
+	       sizeof(lpm_tree->prefix_usage));
 	return lpm_tree;
 
 err_left_struct_set: