diff --git a/latex/presentation/Makefile b/latex/presentation/Makefile
index 30c1307..8abdaa0 100644
--- a/latex/presentation/Makefile
+++ b/latex/presentation/Makefile
@@ -7,7 +7,7 @@ PKG = projektor.sty
 
 TEXMK = latexmk -lualatex -shell-escape -interaction=nonstopmode
 WGET  = wget -q --show-progress
-RM    = rf -rf
+RM    = rm -rf
 
 
 all: $(PDF)