diff --git a/final/widget/ftextview.cpp b/final/widget/ftextview.cpp
index e75cba3e..aebf4696 100644
--- a/final/widget/ftextview.cpp
+++ b/final/widget/ftextview.cpp
@@ -662,7 +662,7 @@ inline void FTextView::processLine (FString&& line, int pos)
 }
 
 //----------------------------------------------------------------------
-inline void FTextView::updateVerticalScrollBar()
+inline void FTextView::updateVerticalScrollBar() const
 {
   const int vmax = ( getRows() > getTextHeight() )
                    ? int(getRows()) - int(getTextHeight())
diff --git a/final/widget/ftextview.h b/final/widget/ftextview.h
index 70bfe6fa..bb259723 100644
--- a/final/widget/ftextview.h
+++ b/final/widget/ftextview.h
@@ -244,7 +244,7 @@ class FTextView : public FWidget
     auto isPrintable (wchar_t) const -> bool;
     auto splitTextLines (const FString&) const -> FStringList;
     void processLine (FString&&, int);
-    void updateVerticalScrollBar();
+    void updateVerticalScrollBar() const;
     void updateHorizontalScrollBar (std::size_t);
     void processChanged() const;
     void changeOnResize() const;
diff --git a/test/fkeyboard-test.cpp b/test/fkeyboard-test.cpp
index 39628e8c..a96af7d0 100644
--- a/test/fkeyboard-test.cpp
+++ b/test/fkeyboard-test.cpp
@@ -3172,8 +3172,11 @@ void FKeyboardTest::init()
   auto& fkey_cap_table = finalcut::FKeyMap::getInstance().getKeyCapMap();
   std::size_t first = 150;
   std::size_t last = fkey_cap_table.size() - 1;
-  assert ( last > first );
-  std::copy ( &fkey_cap_table[first].num, &fkey_cap_table[last].num, &test::fkey[first].num);
+  const auto from_begin =  &fkey_cap_table[first];
+  const auto from_end = &fkey_cap_table[last] + 1;
+  auto to_begin = &test::fkey[first];
+  assert ( from_end > from_begin );
+  std::copy (from_begin, from_end, to_begin);
 
   // Use test::fkey as new termcap map
   keyboard->setTermcapMap (test::fkey);