diff --git a/graphics/nxwidgets/src/clabel.cxx b/graphics/nxwidgets/src/clabel.cxx
index 2523e1084..f07a69b7b 100644
--- a/graphics/nxwidgets/src/clabel.cxx
+++ b/graphics/nxwidgets/src/clabel.cxx
@@ -179,7 +179,7 @@ void CLabel::appendText(const CNxString &text)
  * @param index Index at which to insert the text.
  */
 
-void CLabel::insertText(const CNxString &text, const int index)
+void CLabel::insertText(const CNxString &text, const unsigned int index)
 {
   m_text.insert(text, index);
   onTextChange();
diff --git a/include/graphics/nxwidgets/clabel.hxx b/include/graphics/nxwidgets/clabel.hxx
index 91bcdde76..d5cc5da36 100644
--- a/include/graphics/nxwidgets/clabel.hxx
+++ b/include/graphics/nxwidgets/clabel.hxx
@@ -285,7 +285,7 @@ namespace NXWidgets
      * @param index Index at which to insert the text.
      */
 
-    virtual void insertText(const CNxString &text, const int index);
+    virtual void insertText(const CNxString &text, const unsigned int index);
 
     /**
      * Control the highlight state.