diff --git a/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/RobustMatcher.h b/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/RobustMatcher.h
index 1871aa452a..1a77b92d78 100644
--- a/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/RobustMatcher.h
+++ b/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/RobustMatcher.h
@@ -13,7 +13,6 @@
 #include <opencv2/core/core.hpp>
 #include <opencv2/highgui/highgui.hpp>
 #include <opencv2/features2d/features2d.hpp>
-#include <opencv2/nonfree/nonfree.hpp>
 
 class RobustMatcher {
 public:
diff --git a/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/main_registration.cpp b/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/main_registration.cpp
index be85951f95..baea3a55f5 100644
--- a/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/main_registration.cpp
+++ b/samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/src/main_registration.cpp
@@ -5,7 +5,6 @@
 #include <opencv2/imgproc/imgproc.hpp>
 #include <opencv2/calib3d/calib3d.hpp>
 #include <opencv2/features2d/features2d.hpp>
-#include <opencv2/nonfree/features2d.hpp>
 // PnP Tutorial
 #include "Mesh.h"
 #include "Model.h"