diff --git a/modules/ml/include/opencv2/ml.hpp b/modules/ml/include/opencv2/ml.hpp
index 3abc890342..9575901c6b 100644
--- a/modules/ml/include/opencv2/ml.hpp
+++ b/modules/ml/include/opencv2/ml.hpp
@@ -613,12 +613,9 @@ protected:
     std::string default_model_name;
     std::map<int, int> forward_mapper;
     std::map<int, int> reverse_mapper;
-
     cv::Mat labels_o;
     cv::Mat labels_n;
-
     static cv::Mat calc_sigmoid(const cv::Mat& data);
-
     virtual double compute_cost(const cv::Mat& data, const cv::Mat& labels, const cv::Mat& init_theta);
     virtual cv::Mat compute_batch_gradient(const cv::Mat& data, const cv::Mat& labels, const cv::Mat& init_theta);
     virtual cv::Mat compute_mini_batch_gradient(const cv::Mat& data, const cv::Mat& labels, const cv::Mat& init_theta);