diff --git a/Packages/Qt_widget/doc_tex/Qt_widget_ref/intro.tex b/Packages/Qt_widget/doc_tex/Qt_widget_ref/intro.tex
index 54ca2693721..baa52a4f8ee 100644
--- a/Packages/Qt_widget/doc_tex/Qt_widget_ref/intro.tex
+++ b/Packages/Qt_widget/doc_tex/Qt_widget_ref/intro.tex
@@ -6,6 +6,8 @@
 % | 27-02-2002	Radu Ursu
 % +------------------------------------------------------------------------+
 
+\renewcommand{\qt}{{\em Qt}}      %QT abbreviation
+
 \chapter{Qt\_widget}
 
 \section*{Summary}
diff --git a/Packages/Qt_widget/doc_tex/support/Qt_widget_ref/intro.tex b/Packages/Qt_widget/doc_tex/support/Qt_widget_ref/intro.tex
index 54ca2693721..baa52a4f8ee 100644
--- a/Packages/Qt_widget/doc_tex/support/Qt_widget_ref/intro.tex
+++ b/Packages/Qt_widget/doc_tex/support/Qt_widget_ref/intro.tex
@@ -6,6 +6,8 @@
 % | 27-02-2002	Radu Ursu
 % +------------------------------------------------------------------------+
 
+\renewcommand{\qt}{{\em Qt}}      %QT abbreviation
+
 \chapter{Qt\_widget}
 
 \section*{Summary}