diff --git a/Makefile b/Makefile
index f547958..005e2a4 100644
--- a/Makefile
+++ b/Makefile
@@ -39,6 +39,6 @@ $(GITINFO): FORCE
 	echo "\\newcommand{\\revision}{$(OUTPUT)}" > $(GITINFO)
 
 clean:
-	rm -rf $(OUTDIR)	
+	rm -rf $(OUTDIR)
 
 FORCE: