diff --git a/cli/xml2rfc/writers/pdf.py b/cli/xml2rfc/writers/pdf.py
index 8f73b4cb5..8bb899cdc 100644
--- a/cli/xml2rfc/writers/pdf.py
+++ b/cli/xml2rfc/writers/pdf.py
@@ -86,6 +86,8 @@ def pdf(self):
             'bottom-center': self.page_bottom_center(),
             'fonts': ', '.join(fonts),
         }
+        for (k,v) in page_info.items():
+            page_info[k] = v.replace("'", r"\'")
         page_css_text = page_css_template.format(**page_info)
         page_css = weasyprint.CSS(string=page_css_text)