diff --git a/make-includes/build_lecture_rules.make b/make-includes/build_lecture_rules.make
index e71be5a..5c1b0bb 100755
--- a/make-includes/build_lecture_rules.make
+++ b/make-includes/build_lecture_rules.make
@@ -36,6 +36,7 @@
 vpath %.plo $(IMGDIR)
 vpath %.ps $(IMGDIR)
 vpath %.eps $(IMGDIR)
+vpath %.svg $(IMGDIR)
 
 
 ################################################################################
@@ -342,3 +343,13 @@
 #
 %.pdf: %.eps
 	ps2eps --ignoreBB --nohires --loose < $< | ps2pdf -dEPSCrop - $(IMGDIR)/$@
+#
+# PDF from SVG (via Inkscape)
+# We remove the intermediate file manually rather than through the tidy/clean
+# mechanism, because we might have EPS files that aren't generated by 
+# something else.
+#
+%.pdf: %.svg
+	inkscape --file=$< --export-text-to-path --without-gui --export-eps=$(IMGDIR)/$*.eps
+	ps2eps --ignoreBB --nohires --loose < $(IMGDIR)/$*.eps | ps2pdf -dEPSCrop - $(IMGDIR)/$@
+	rm -f $(IMGDIR)/$*.eps