diff --git a/src/textord/makerow.cpp b/src/textord/makerow.cpp
index 984a9d0db2..aa1889995e 100644
--- a/src/textord/makerow.cpp
+++ b/src/textord/makerow.cpp
@@ -2000,6 +2000,9 @@ void Textord::make_spline_rows(TO_BLOCK *block, // block to do
                                bool testing_on) {
 #ifndef GRAPHICS_DISABLED
   ScrollView::Color colour; // of row
+  if (testing_on && to_win == nullptr) {
+    create_to_win(page_tr_);
+  }
 #endif
   TO_ROW_IT row_it = block->get_rows();