diff --git a/ThProg/Makefile b/ThProg/Makefile
index d2ee4d9..f366443 100644
--- a/ThProg/Makefile
+++ b/ThProg/Makefile
@@ -10,9 +10,9 @@ continuous: $(PDF).continuous
 clean: cleanup rmpdf all
 
 rmpdf:
-	@-rm -f *.pdf 	
+	@-rm -f *.pdf
 
-cleanup: 
+cleanup:
 	@-rm -f *.aux *.fdb_latexmk *.fls *.log
 
 %.continuous: %.pdf