diff --git a/Makefile b/Makefile
index 1a990c1..64d0fe5 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,7 @@ EFLAGS =
 HTML = tutorial.html
 EPUB = tutorial.epub
 PDF = tutorial.pdf
+TEX = tutorial.tex
 
 COVER = resources/cover.tex
 BACK = resources/back.tex
@@ -56,7 +57,7 @@ links:
 	brok tutorial.md
 
 clean:
-	-rm -f $(CHAPTERS) $(HTML) $(PDF) $(EPUB)
+	-rm -f $(CHAPTERS) $(HTML) $(PDF) $(EPUB) $(TEX)
 
 # pandoc executable 'includes' is rather large
 clean-all:
diff --git a/resources/cover.tex b/resources/cover.tex
index 3c0faa9..d182bf1 100644
--- a/resources/cover.tex
+++ b/resources/cover.tex
@@ -11,7 +11,7 @@
      \Large{Stephen Diehl}
   \end{flushright}
 
-  \tikz[remember picture,overlay]
+  \tikz[remember picture, overlay]
     \node[opacity=1.0,inner sep=0pt,shift={(0 cm,8cm)}] at (current page.south)
     {\includegraphics[width=\paperwidth,height=\paperheight]{resources/cover2.eps}};