diff --git a/manual/LaTeX.Rules b/manual/LaTeX.Rules
index cfe43b055c..a18562992f 100644
--- a/manual/LaTeX.Rules
+++ b/manual/LaTeX.Rules
@@ -230,7 +230,7 @@ define run-latex
 	makeobsolete() { touch -r $$(ls *.old | tail -n 1) $${1} ; true ; } ; \
 	nochange() { for file ; do [ ! -f $${1} ] || cmp $${1} $${1}.old >/dev/null || return ; done ; true ; } ; \
 	saveold $(MONITOR_FILES) ; \
-	if $(LATEX) $(LATEXOPTS) $* $(LATEXFILTER) ; then \
+	if $(LATEX) $(LATEXOPTS) $* </dev/null $(LATEXFILTER); then \
 	   if nochange $(MONITOR_FILES) ; then \
 	      echo "$(MAKE): LaTeX auxiliary files did not change (processing is complete)" ; \
 	      restoreold $(MONITOR_FILES) ; \
@@ -275,7 +275,7 @@ $(PDF_FILE) : %.pdf : $(TEX_FILES) $(MONITOR_FILES) $(GRAPHIC_FILES) $(XFIG_TEX)
 #
 
 %.aux %.idx : $(XFIG_TEX)
-	$(LATEX) $(LATEXOPTS) $* $(LATEXFILTER)
+	$(LATEX) $(LATEXOPTS) $* </dev/null $(LATEXFILTER)
 
 #
 # Distill xfig .fig files into .fig.tex and either .fig.pdf or .fig.ps
diff --git a/manual/Makefile.pdflatex b/manual/Makefile.pdflatex
index c351f82fb5..c533e0fed0 100644
--- a/manual/Makefile.pdflatex
+++ b/manual/Makefile.pdflatex
@@ -16,7 +16,7 @@ buildmanual: rockbox-build.tex pdf
 
 buildhtml: rockbox-build.tex
 	@mkdir -p $(OBJDIR)/html
-	@$(HTLATEX) $(DOCUMENT) "$(HTOPTS1),$(SPLITHTML)" $(HTOPTS2) $(HTOPTS3)
+	@$(HTLATEX) $(DOCUMENT) "$(HTOPTS1),$(SPLITHTML)" $(HTOPTS2) $(HTOPTS3) </dev/null
 	@cp --parent `cat $(OBJDIR)/html/*.html | sed -e '/\.js/!d;s/.*\"\(.*\.js\)\".*/\1/g;/</d' | uniq` $(OBJDIR)/html
 	@cp --parent `cat $(OBJDIR)/html/*.html | sed -e '/[pj][np]g/!d;s/.*\"\(.*\.[pj][np]g\)\".*/\1/g;/</d'` $(OBJDIR)/html
 	@cp -r $(OBJDIR)/html $(OBJDIR)/../