diff --git a/modules/core/include/opencv2/core/bindings_utils.hpp b/modules/core/include/opencv2/core/bindings_utils.hpp
index 4f7eb532b9..76c9437a30 100644
--- a/modules/core/include/opencv2/core/bindings_utils.hpp
+++ b/modules/core/include/opencv2/core/bindings_utils.hpp
@@ -219,6 +219,11 @@ AsyncArray testAsyncException()
     return p.getArrayResult();
 }
 
+CV_WRAP static inline
+String dumpVec2i(const cv::Vec2i value = cv::Vec2i(42, 24)) {
+    return format("Vec2i(%d, %d)", value[0], value[1]);
+}
+
 namespace nested {
 CV_WRAP static inline bool testEchoBooleanFunction(bool flag) {
     return flag;
diff --git a/modules/python/src2/cv2_convert.hpp b/modules/python/src2/cv2_convert.hpp
index 563f5386b7..700f29e3c5 100644
--- a/modules/python/src2/cv2_convert.hpp
+++ b/modules/python/src2/cv2_convert.hpp
@@ -62,6 +62,10 @@ PyObject* pyopencv_from(const T& src) { return PyOpenCV_Converter<T>::from(src);
 template<typename _Tp, int m, int n>
 bool pyopencv_to(PyObject* o, cv::Matx<_Tp, m, n>& mx, const ArgInfo& info)
 {
+    if (!o || o == Py_None) {
+        return true;
+    }
+
     cv::Mat tmp;
     if (!pyopencv_to(o, tmp, info)) {
         return false;
diff --git a/modules/python/test/test_misc.py b/modules/python/test/test_misc.py
index fd21656d83..deabbd25aa 100644
--- a/modules/python/test/test_misc.py
+++ b/modules/python/test/test_misc.py
@@ -736,6 +736,13 @@ class CanUsePurePythonModuleFunction(NewOpenCVTests):
         res = cv.utils._native.testOverwriteNativeMethod(123)
         self.assertEqual(res, 123, msg="Failed to call native method implementation")
 
+    def test_default_matx_argument(self):
+        res = cv.utils.dumpVec2i()
+        self.assertEqual(res, "Vec2i(42, 24)",
+                         msg="Default argument is not properly handled")
+        res = cv.utils.dumpVec2i((12, 21))
+        self.assertEqual(res, "Vec2i(12, 21)")
+
 
 class SamplesFindFile(NewOpenCVTests):