diff --git a/fanficfare/adapters/base_adapter.py b/fanficfare/adapters/base_adapter.py
index c90b8295..51647b25 100644
--- a/fanficfare/adapters/base_adapter.py
+++ b/fanficfare/adapters/base_adapter.py
@@ -670,6 +670,7 @@ try to download.</p>
         return url in self.add_img_names
 
     def include_css_urls(self,parenturl,style):
+        FONT_EXTS = ('ttf','otf','woff','woff2')
         # logger.debug("include_css_urls(%s,%s)"%(parenturl,style))
         ## pass in the style string, will be returned with URLs
         ## replaced and images will be added.
@@ -680,12 +681,16 @@ try to download.</p>
             ## url('href')
             ## the pattern will also accept mismatched '/", which is broken CSS.
             for style_url in re.findall(r'url\([\'"]?(.*?)[\'"]?\)', style):
-                logger.debug("Adding style url(%s)"%style_url)
                 ## additional_images don't get processing.  Applies
                 ## only to CSS url(), that should be the only time
                 ## additional_images is used.
                 if self.is_additional_image(style_url):
+                    logger.debug("Skipping sheet style url(%s), in additional_images"%style_url)
                     continue
+                if style_url.rsplit('.')[-1].lower() in FONT_EXTS:
+                    logger.debug("Skipping sheet style url(%s), assumed font"%style_url)
+                    continue
+                logger.debug("Adding style url(%s)"%style_url)
 
                 try:
                     # longdesc(aka origurl) isn't saved anywhere in CSS.
diff --git a/fanficfare/epubutils.py b/fanficfare/epubutils.py
index 1637ef50..c65bed32 100644
--- a/fanficfare/epubutils.py
+++ b/fanficfare/epubutils.py
@@ -20,6 +20,8 @@ from .six import ensure_text, text_type as unicode
 from .six import string_types as basestring
 from io import BytesIO
 
+FONT_EXTS = ('ttf','otf','woff','woff2')
+
 # from io import StringIO
 # import cProfile, pstats
 # from pstats import SortKey
@@ -191,6 +193,9 @@ def get_update_data(inputio,
                                 for style_url in re.findall(r'url\([\'"]?(.*?)[\'"]?\)', style):
                                     if style_url.startswith('failedtoload'):
                                         continue
+                                    if style_url.rsplit('.')[-1].lower() in FONT_EXTS:
+                                        logger.debug("Skipping sheet style url(%s), assumed font"%style_url)
+                                        continue
                                     logger.debug("Updating inline/embedded style url(%s)"%style_url)
                                     newsrc=''
                                     longdesc=''
@@ -262,6 +267,9 @@ def get_update_data(inputio,
                     # logger.debug("%s CSS url:%s"%(href,style))
                     ## the pattern will also accept mismatched '/", which is broken CSS.
                     for style_url in re.findall(r'url\([\'"]?(.*?)[\'"]?\)', style):
+                        if style_url.rsplit('.')[-1].lower() in FONT_EXTS:
+                            logger.debug("Skipping sheet style url(%s), assumed font"%style_url)
+                            continue
                         logger.debug("Updating sheet style url(%s)"%style_url)
                         newsrc=''
                         longdesc=''