TEXS:=$(wildcard *.tex)
 
 .PHONY: all
-.SECONDARY: $(DOC).fmt logo.png
 
 all: $(DOC).pdf
 
-%.fmt: preamble.tex logo.png
+%.fmt: preamble.tex logo.pdf
        $(LATEX) $(LATEXFLAGS) -ini -jobname="$(basename $@)" "&$(LATEX) $<\dump"
 
 %.pdf: %.tex %.fmt $(TEXS)
        grep -qF 'Please rerun LaTeX.' $(basename $<).mlog &&\
                $(LATEX) $(LATEXFLAGS) $< || true
 
-%.png: %.eps
-       convert -density 300 $< -resize x1000 $@
-
 clean:
        $(RM) $(addprefix $(DOC).,aux log fmt toc bbl blg mlog run.xml pdf)\
                $(DOC)-blx.bib logo.png
 
        authorstext={Authors:},
        righttextheader={},
        righttext={}
-}      
+}
 \newcommand{\maketitleru}[1][]{
        \setkeys{maketitleru}{#1}
        \begin{titlepage}
                \makeatletter
                \begin{center}
                        \textsc{\LARGE\@rutitlecourse}\\[1.5cm]
-                       \ifpdf\includegraphics[height=150pt]{logo.png}\\
+                       \ifpdf\includegraphics[height=150pt]{logo.pdf}\\
                        \else\includegraphics[height=150pt]{logo.eps}\\
                        \fi
                        \vspace{0.4cm}