diff --git a/latex/main.tex b/latex/main.tex
index ef6789f..0cc3671 100644
--- a/latex/main.tex
+++ b/latex/main.tex
@@ -47,7 +47,7 @@
 \include{chapters/id/03_methodology/index}
 % \include{chapters/04_results}
 % \include{content/conclusion}
-
+\backmatter
 % Bibliography
 \printbibliography[heading=bibintoc]
 % \bibliographystyle{IEEEtran}
diff --git a/latex/thesis.cls b/latex/thesis.cls
index ba413fe..ff07f6b 100644
--- a/latex/thesis.cls
+++ b/latex/thesis.cls
@@ -131,6 +131,25 @@
     \fancyhead[R]{\thepage}
 }
 
+% change the behaviour of \backmatter to change page number into roman by continue frontmatter page counter (modified from original book.cls)
+\newcounter{savepagenumber}
+\renewcommand\mainmatter{%
+  \cleardoublepage
+  \setcounter{savepagenumber}{\value{page}}
+  \@mainmattertrue
+  \pagenumbering{arabic}%
+}
+\renewcommand\backmatter{%
+  \if@openright
+    \cleardoublepage
+  \else
+    \clearpage
+  \fi
+  \pagenumbering{roman}%
+  \setcounter{page}{\value{savepagenumber}}%
+  \@mainmatterfalse
+}
+
 % Chapter formatting
 \titlespacing{\chapter}{0pt}{0cm}{*1.5}