diff --git a/MatheC4/Makefile b/MatheC4/Makefile
index 41c0356..b0a4b0f 100644
--- a/MatheC4/Makefile
+++ b/MatheC4/Makefile
@@ -1,4 +1,4 @@
-PDF = MaC4Cheatsheet.pdf
+PDF = MaC4Cheatsheet
 
 all: $(PDF)