thodg/fonts/Courier

diff --git a/Makefile b/Makefile
index f7980cb..bff933e 100644
--- a/Makefile
+++ b/Makefile
@@ -20,3 +20,6 @@ fonts/%.svg: sfd/%.sfd Makefile bin/convert.py
 	bin/convert.py "$<" "$@"
 fonts/%.otf: sfd/%.sfd Makefile bin/convert.py
 	bin/convert.py "$<" "$@"
+
+clean:
+	/bin/rm $(TTF) $(WOFF) $(WOFF2) $(SVG) $(OTF) >/dev/null 2>/dev/null || true