diff --git a/samples/opengl/CMakeLists.txt b/samples/opengl/CMakeLists.txt
index b322d98d72..689a5517d9 100644
--- a/samples/opengl/CMakeLists.txt
+++ b/samples/opengl/CMakeLists.txt
@@ -14,6 +14,7 @@ SET(OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS
   opencv_imgproc
   opencv_imgcodecs
   opencv_geometry
+  opencv_ptcloud
   opencv_videoio
   opencv_highgui)
 ocv_check_dependencies(${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
diff --git a/samples/opengl/opengl_testdata_generator.cpp b/samples/opengl/opengl_testdata_generator.cpp
index 2b88ea95a9..9ad422d01f 100644
--- a/samples/opengl/opengl_testdata_generator.cpp
+++ b/samples/opengl/opengl_testdata_generator.cpp
@@ -20,6 +20,7 @@
 #include "opencv2/imgproc.hpp"
 #include "opencv2/highgui.hpp"
 #include "opencv2/geometry.hpp"
+#include "opencv2/ptcloud.hpp"
 
 using namespace std;
 using namespace cv;
@@ -510,17 +511,17 @@ int main(int argc, char* argv[])
 
         for (const auto& res : resolutions)
         {
-            for (const auto shadingPair : shadingTxt)
+            for (const auto& shadingPair : shadingTxt)
             {
                 cv::TriangleShadingType shadingType = shadingPair.first;
                 std::string shadingName = shadingPair.second;
 
-                for (const auto cullingPair : cullingTxt)
+                for (const auto& cullingPair : cullingTxt)
                 {
                     cv::TriangleCullingMode cullingMode = cullingPair.first;
                     std::string cullingName = cullingPair.second;
 
-                    for (const auto modelPair : modelTxt)
+                    for (const auto& modelPair : modelTxt)
                     {
                         ModelType modelType = modelPair.first;
                         std::string modelName = modelPair.second;