--- a/doc/make_doc
+++ b/doc/make_doc
@@ -1,9 +1,9 @@
 #!/bin/sh
 rm -f manual.aux manual.dvi manual.idx manual.ilg manual.ind manual.lab manual.log manual.six manual.toc
 tex manual
-../../../etc/manualindex manual
+/usr/share/gap/etc/manualindex manual
 tex manual
 mkdir -p ../htm
-../../../etc/convert.pl -c -i -u -n crystcat . ../htm
+/usr/share/gap/etc/convert.pl -c -i -u -n crystcat . ../htm
 dvips -o manual.ps manual
 ps2pdf manual.ps manual.pdf
--- a/doc/manual.tex
+++ b/doc/manual.tex
@@ -1,4 +1,4 @@
-\input ../../../etc/gapmacro.tex
+\input /usr/share/gap/etc/gapmacro.tex
 \Package{Cryst}
 \Package{CrystCat}
 
