diff --git a/make/svg.mk b/make/svg.mk
index 1a511696..4d580e91 100644
--- a/make/svg.mk
+++ b/make/svg.mk
@@ -1,8 +1,9 @@
-SVG                   ?= $(wildcard *.svg)
+SVG                   ?= $(filter-out copied-%,$(wildcard *.svg))
+COPIED_SVG             = $(addprefix copied-,$(notdir $(SVG)))
 GENERATED_WIDTHS      ?= 50 100 200 300 400 500 600 700 800 546
 GENERATED_PNG_WIDTHS  ?= $(GENERATED_WIDTHS)
 GENERATED_PNGS         = \
-	$(foreach w, $(GENERATED_PNG_WIDTHS),$(patsubst %.svg,%-$w.png,$(SVG)))
+	$(foreach w, $(GENERATED_PNG_WIDTHS),$(patsubst %.svg,%-$w.png,$(notdir $(SVG))))
 GENERATED_IMAGES       = $(GENERATED_PNGS)
 
 all: $(GENERATED_IMAGES)
@@ -11,10 +12,14 @@ clean: clean.images
 distclean:
 
 clean.images:
-	rm -f $(GENERATED_IMAGES)
+	rm -f $(GENERATED_IMAGES) $(COPIED_SVG)
 
-%.png: $(SVG)
+%.png: $(COPIED_SVG)
 	inkscape -w $(shell echo $* | sed 's/.*-//') \
-		--export-png=$@ $(shell echo $* | sed 's/-[0-9]\+$$//').svg
+		--export-png=$@ copied-$(shell echo $* | sed 's/-[0-9]\+$$//').svg
 
+copied-%.svg: $(SVG)
+	@echo $^
+	cp $(filter %$*.svg, $^) $@.tmp
+	mv $@.tmp $@