diff --git a/screenless/bureau/bureau.py b/screenless/bureau/bureau.py
index 492a1ed..c2ad810 100644
--- a/screenless/bureau/bureau.py
+++ b/screenless/bureau/bureau.py
@@ -358,12 +358,16 @@ class Bureau(object):
         fontsdir = os.path.join(self.mdir, "fonts")
         self.log.debug(fontsdir)
         for font in glob.glob(fontsdir + "/*.otf"):
-            self.log.debug("adding font " + "file://" + font)
-            fontconfig.add_font_face("file://" + font,
+            fdict = {}
+            fdict["src"] = ("local", "file://" + font)
+            self.log.debug("adding font " + str(fdict))
+            fontconfig.add_font_face(fdict,
                                      weasyprint.default_url_fetcher)
         for font in glob.glob(fontsdir + "/*.ttf"):
-            self.log.debug("adding font " + "file://" + font)
-            fontconfig.add_font_face("file://" + font,
+            fdict = {}
+            fdict["src"] = ("local", "file://" + font)
+            self.log.debug("adding font " + str(fdict))
+            fontconfig.add_font_face(fdict,
                                      weasyprint.default_url_fetcher)
         weasyprint.HTML(string=templ.render_unicode(**kwargs)).write_pdf(pdfpath, font_config=fontconfig)
         subprocess.call("lpr -o sides=two-sided-long-edge -o InputSlot=Upper " + pdfpath, shell=True)