diff --git a/samples/cpp/cloning_gui.cpp b/samples/cpp/cloning_gui.cpp
index b8ac07ff06..14a5079ac0 100644
--- a/samples/cpp/cloning_gui.cpp
+++ b/samples/cpp/cloning_gui.cpp
@@ -39,7 +39,12 @@
 #include <iostream>
 #include <stdlib.h>
 
-using namespace std;
+// we're NOT "using namespace std;" here, to avoid collisions between the beta variable and std::beta in c++17
+using std::cin;
+using std::cout;
+using std::endl;
+using std::string;
+
 using namespace cv;
 
 Mat img0, img1, img2, res, res1, final, final1, blend;
diff --git a/samples/cpp/tutorial_code/HighGUI/BasicLinearTransformsTrackbar.cpp b/samples/cpp/tutorial_code/HighGUI/BasicLinearTransformsTrackbar.cpp
index 563e35dc2b..12cdebf00f 100644
--- a/samples/cpp/tutorial_code/HighGUI/BasicLinearTransformsTrackbar.cpp
+++ b/samples/cpp/tutorial_code/HighGUI/BasicLinearTransformsTrackbar.cpp
@@ -8,6 +8,7 @@
 #include "opencv2/imgcodecs.hpp"
 #include "opencv2/highgui.hpp"
 
+// we're NOT "using namespace std;" here, to avoid collisions between the beta variable and std::beta in c++17
 using namespace cv;
 
 /** Global Variables */
diff --git a/samples/cpp/tutorial_code/ImgProc/BasicLinearTransforms.cpp b/samples/cpp/tutorial_code/ImgProc/BasicLinearTransforms.cpp
index 0f325545c8..49ee1bf215 100644
--- a/samples/cpp/tutorial_code/ImgProc/BasicLinearTransforms.cpp
+++ b/samples/cpp/tutorial_code/ImgProc/BasicLinearTransforms.cpp
@@ -8,7 +8,10 @@
 #include "opencv2/highgui.hpp"
 #include <iostream>
 
-using namespace std;
+// we're NOT "using namespace std;" here, to avoid collisions between the beta variable and std::beta in c++17
+using std::cin;
+using std::cout;
+using std::endl;
 using namespace cv;
 
 /**
diff --git a/samples/cpp/tutorial_code/ImgProc/changing_contrast_brightness_image/changing_contrast_brightness_image.cpp b/samples/cpp/tutorial_code/ImgProc/changing_contrast_brightness_image/changing_contrast_brightness_image.cpp
index 7ee22a2258..a7dff6e92b 100644
--- a/samples/cpp/tutorial_code/ImgProc/changing_contrast_brightness_image/changing_contrast_brightness_image.cpp
+++ b/samples/cpp/tutorial_code/ImgProc/changing_contrast_brightness_image/changing_contrast_brightness_image.cpp
@@ -2,7 +2,7 @@
 #include "opencv2/imgcodecs.hpp"
 #include "opencv2/highgui.hpp"
 
-using namespace std;
+// we're NOT "using namespace std;" here, to avoid collisions between the beta variable and std::beta in c++17
 using namespace cv;
 
 namespace
diff --git a/samples/cpp/tutorial_code/core/AddingImages/AddingImages.cpp b/samples/cpp/tutorial_code/core/AddingImages/AddingImages.cpp
index 1dd1d09546..1181894482 100644
--- a/samples/cpp/tutorial_code/core/AddingImages/AddingImages.cpp
+++ b/samples/cpp/tutorial_code/core/AddingImages/AddingImages.cpp
@@ -8,7 +8,11 @@
 #include <iostream>
 
 using namespace cv;
-using namespace std;
+
+// we're NOT "using namespace std;" here, to avoid collisions between the beta variable and std::beta in c++17
+using std::cin;
+using std::cout;
+using std::endl;
 
 /**
  * @function main
diff --git a/samples/cpp/tutorial_code/photo/seamless_cloning/cloning_gui.cpp b/samples/cpp/tutorial_code/photo/seamless_cloning/cloning_gui.cpp
index 8e9e23fb5c..1bde7ee5e4 100644
--- a/samples/cpp/tutorial_code/photo/seamless_cloning/cloning_gui.cpp
+++ b/samples/cpp/tutorial_code/photo/seamless_cloning/cloning_gui.cpp
@@ -38,7 +38,12 @@
 #include <iostream>
 #include <stdlib.h>
 
-using namespace std;
+// we're NOT "using namespace std;" here, to avoid collisions between the beta variable and std::beta in c++17
+using std::cin;
+using std::cout;
+using std::endl;
+using std::string;
+
 using namespace cv;
 
 Mat img0, img1, img2, res, res1, final, final1, blend;