diff --git a/include/thesisclass.cls b/include/thesisclass.cls
index 0a10f51..cc1cd68 100644
--- a/include/thesisclass.cls
+++ b/include/thesisclass.cls
@@ -396,10 +396,11 @@
     \thispagestyle{plain}
 }
 
-\newcommand{\emptychapter}[2]
+\newcommand{\emptychapter}[2][]
 {
-    \clearpage\addtocounter{chapter}{1}\addtocontents{toc}{\protect\contentsline
-                           {chapter}{\protect\numberline {\thechapter}#1}{#2}{}}
+    \addtocounter{chapter}{1}
+    \addtocontents{toc}{\protect\contentsline
+        {chapter}{\protect\numberline {\thechapter}#2}{#1}{}}
 }
 
 %% **** END OF CLASS ****
diff --git a/main.pdf b/main.pdf
index f315382..420a06e 100644
Binary files a/main.pdf and b/main.pdf differ
diff --git a/main.tex b/main.tex
index de43f22..8e0c573 100644
--- a/main.tex
+++ b/main.tex
@@ -114,8 +114,10 @@
     \chapter{Experimental Investigations}
     \input{./chap/chapter3.tex}
 
-    \emptychapter{ROOT Routines}{3}     % usage: \emptychapter{name of the 
-                                        %        chapter}{page displayed in toc}
+    \emptychapter[3]{ROOT Routines}     % usage: \emptychapter[page displayed 
+                                        %        in toc]{name of the chapter}
+
+
 
     \chapter{Conclusions}
     \input{./chap/chapter4.tex}