diff --git a/modules/cudalegacy/src/calib3d.cpp b/modules/cudalegacy/src/calib3d.cpp
index 7d8c816fa0..96c23fc06d 100644
--- a/modules/cudalegacy/src/calib3d.cpp
+++ b/modules/cudalegacy/src/calib3d.cpp
@@ -160,7 +160,7 @@ namespace
                   num_points(num_points_), subset_size(subset_size_), rot_matrices(rot_matrices_),
                   transl_vectors(transl_vectors_) {}
 
-        void operator()(const Range& range) const
+        void operator()(const Range& range) const CV_OVERRIDE
         {
             // Input data for generation of the current hypothesis
             std::vector<int> subset_indices(subset_size);
diff --git a/samples/cpp/tutorial_code/core/how_to_use_OpenCV_parallel_for_/how_to_use_OpenCV_parallel_for_.cpp b/samples/cpp/tutorial_code/core/how_to_use_OpenCV_parallel_for_/how_to_use_OpenCV_parallel_for_.cpp
index ed7d4a0155..2dcc1ff107 100644
--- a/samples/cpp/tutorial_code/core/how_to_use_OpenCV_parallel_for_/how_to_use_OpenCV_parallel_for_.cpp
+++ b/samples/cpp/tutorial_code/core/how_to_use_OpenCV_parallel_for_/how_to_use_OpenCV_parallel_for_.cpp
@@ -42,7 +42,7 @@ public:
     {
     }
 
-    virtual void operator ()(const Range& range) const
+    virtual void operator ()(const Range& range) const CV_OVERRIDE
     {
         for (int r = range.start; r < range.end; r++)
         {