diff --git a/makefile b/makefile
index cbbce57..464196e 100644
--- a/makefile
+++ b/makefile
@@ -13,3 +13,4 @@ install: all
 
 clean:
 	rm -rf ${DESTDIR}
+
diff --git a/src/x301/preamble.md b/src/x301/preamble.md
index 771b275..d03b0ba 100644
--- a/src/x301/preamble.md
+++ b/src/x301/preamble.md
@@ -29,6 +29,7 @@ them now.
 2. Soapy water
 3. Just water on a tissue
 4. Denatured alcohol
+5. Wet and Dry sand paper
 
 All of the above either yielded no results or made things worse. The first
 method with the magic eraser and cream worked to some extent but the rubber