Index: gap-4r10p0/doc/make_doc.in
===================================================================
--- gap-4r10p0.orig/doc/make_doc.in
+++ gap-4r10p0/doc/make_doc.in
@@ -13,7 +13,7 @@ echo "--------------------"
 "$GAP" $GAPARGS -A <<EOF
 base:="@abs_top_srcdir@";;
 books:=["ref", "tut", "changes", "hpc", "dev"];;
-latexOpts := rec(Maintitlesize := "\\fontsize{36}{38}\\selectfont");;
+latexOpts := rec(Maintitlesize := "\\\\fontsize{36}{38}\\\\selectfont");;
 for run in [1,2] do
   for book in books do
     path := Concatenation(base, "/doc/", book);
