diff --git a/src/common/detail/clglcontext.cpp b/src/common/detail/clglcontext.cpp
index 4411189e7..8c5b94b7d 100644
--- a/src/common/detail/clglcontext.cpp
+++ b/src/common/detail/clglcontext.cpp
@@ -67,6 +67,7 @@ CLExecContext_t& CLGLContext::getCLExecContext() {
 #endif
 
 void CLGLContext::blitFrameBufferToScreen(const cv::Rect& viewport, const cv::Size& windowSize, bool stretch) {
+    cerr << viewport << " " << windowSize << endl;
     GL_CHECK(glBindFramebuffer(GL_READ_FRAMEBUFFER, frameBufferID_));
     GL_CHECK(glReadBuffer(GL_COLOR_ATTACHMENT0));
     GL_CHECK(glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0));
diff --git a/src/common/viz2d.cpp b/src/common/viz2d.cpp
index afbd91d3e..17b5988a8 100644
--- a/src/common/viz2d.cpp
+++ b/src/common/viz2d.cpp
@@ -757,7 +757,7 @@ bool Viz2D::display() {
         makeCurrent();
         glfwPollEvents();
         screen().draw_contents();
-        clglContext_->blitFrameBufferToScreen(getViewport(), getWindowSize(), isStretching());
+        clglContext_->blitFrameBufferToScreen(getViewport(), getInitialSize(), isStretching());
         screen().draw_widgets();
         glfwSwapBuffers(glfwWindow_);
         result = !glfwWindowShouldClose(glfwWindow_);