1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index ef1bfa3..a9ece23 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ clean: clean-latex
 
 
 # PDF slides:
-slides=slides-intro.pdf slides-intro-short.pdf
+slides = slides-intro-short.pdf slides-intro.pdf
 $(slides): %.pdf: %.tex tex/*.tex
         # We'll run pdflatex two times so the page numbers and
         # internal links also work.