diff --git a/00.Definitions/packages.tex b/00.Definitions/packages.tex
index 2212893..2a44977 100644
--- a/00.Definitions/packages.tex
+++ b/00.Definitions/packages.tex
@@ -122,6 +122,9 @@
 \usepackage[printonlyused]{acronym}
 \usepackage[titletoc,title,header]{appendix}
 \usepackage[noauto]{chappg}
+%The following line assures that each chapter deals with acronyms idependently.
+%You may also do it manually by calling acresetall anywhere in the documento to reset the acronyms behaviour. 
+\preto\chapter\acresetall
 
 % PACKAGE extra_functions VER COMO DEVE SER
 % -----------------
@@ -160,4 +163,4 @@
 \newcommand{\equationref}[1]{Equation (\ref{#1})}
 \newcommand{\tableref}[1]{Table (\ref{#1})}
 
-\newcommand{\textreg}{$\textsuperscript{\textregistered}$}
\ No newline at end of file
+\newcommand{\textreg}{$\textsuperscript{\textregistered}$}