diff --git a/modules/viz/src/vizimpl.cpp b/modules/viz/src/vizimpl.cpp
index a927ca65ac..b9cdc91ced 100644
--- a/modules/viz/src/vizimpl.cpp
+++ b/modules/viz/src/vizimpl.cpp
@@ -509,7 +509,7 @@ void cv::viz::Viz3d::VizImpl::setViewerPose(const Affine3d &pose)
 }
 
 /////////////////////////////////////////////////////////////////////////////////////////////
-cv::Affine3d cv::viz::Viz3d::VizImpl::getViewerPose()
+cv::Affine3d cv::viz::Viz3d::VizImpl::getViewerPose() const
 {
     vtkCamera& camera = *renderer_->GetActiveCamera();
 
diff --git a/modules/viz/src/vizimpl.hpp b/modules/viz/src/vizimpl.hpp
index 65edffb3dc..d3e7f17350 100644
--- a/modules/viz/src/vizimpl.hpp
+++ b/modules/viz/src/vizimpl.hpp
@@ -88,7 +88,7 @@ public:
     void resetCamera();
 
     void setViewerPose(const Affine3d &pose);
-    Affine3d getViewerPose();
+    Affine3d getViewerPose() const;
 
     void convertToWindowCoordinates(const Point3d &pt, Point3d &window_coord);
     void converTo3DRay(const Point3d &window_coord, Point3d &origin, Vec3d &direction);