diff --git a/doc/Makefile b/doc/Makefile
index 3907251c..5d05ea42 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -20,10 +20,10 @@ PATH := $(PATH):$(CODEC2_BINARY)/src
 PLOT_FILES := hts2a_37_sn.tex hts2a_37_sw.tex hts2a_37_lpc_lsp.tex hts2a_37_lpc_pf.tex
 
 $(DOCNAME).pdf: $(PLOT_FILES) $(DOCNAME).tex $(DOCNAME)_refs.bib
-	pdflatex -file-line-error -jobname=$(JOBNAME) $(DOCNAME).tex 
+	pdflatex -shell-escape -file-line-error -jobname=$(JOBNAME) $(DOCNAME).tex 
 	bibtex   $(JOBNAME).aux
-	pdflatex -file-line-error -jobname=$(JOBNAME) $(DOCNAME).tex
-	pdflatex -file-line-error -jobname=$(JOBNAME) $(DOCNAME).tex
+	pdflatex -shell-escape -file-line-error -jobname=$(JOBNAME) $(DOCNAME).tex
+	pdflatex -shell-escape -file-line-error -jobname=$(JOBNAME) $(DOCNAME).tex
 
 $(PLOT_FILES):
 	echo $(PATH)
diff --git a/doc/codec2.tex b/doc/codec2.tex
index c3538eae..89218faa 100644
--- a/doc/codec2.tex
+++ b/doc/codec2.tex
@@ -9,14 +9,14 @@
 \usepackage{catchfile}
 \usepackage{siunitx}
 
-\CatchFileDef{\headfull}{../.git/HEAD}{}
-\StrGobbleRight{\headfull}{1}[\head]
-\StrBehind[2]{\head}{/}[\branch]
-\IfFileExists{../.git/refs/heads/\branch}{%
-    \CatchFileDef{\commit}{../.git/refs/heads/\branch}{}}{%
-    \newcommand{\commit}{\dots~(in \emph{packed-refs})}}
 \newcommand{\gitrevision}{%
-  \StrLeft{\commit}{7}%
+  \immediate\write18{git log -n1 --oneline | awk '{print $1;}' > gitrevision.txt}
+  \input{gitrevision.txt}
+}
+
+\newcommand{\branch}{%
+  \immediate\write18{git branch --show-current > gitbranch.txt}
+  \input{gitbranch.txt}
 }
 
 \title{Codec 2}
@@ -53,7 +53,7 @@ pinstyle/.style = {pin edge={to-,thin,black}}
 	\draw (#1,#2-0.25) -- (#1,#2+0.25);
 }
 
-%\maketitle
+\maketitle
 
 \section{Introduction}