diff --git a/src/epub_converter/css_preprocessing.py b/src/epub_converter/css_preprocessing.py
index fa72c12..2212bd5 100644
--- a/src/epub_converter/css_preprocessing.py
+++ b/src/epub_converter/css_preprocessing.py
@@ -5,7 +5,7 @@ from ebooklib import epub
 from bs4 import BeautifulSoup
 from itertools import takewhile
 
-from src.util.color_reader import str2hex, rgb2color_name
+from src.util.color_reader import str2hex
 from src.livecarta_config import LiveCartaConfig
 
 
@@ -129,7 +129,8 @@ LIVECARTA_STYLE_ATTRS_MAPPING = {
     'font-variant': lambda x: x,
     'text-align': lambda x: x,
     'font': lambda x: '',
-    'font-family': lambda x: LiveCartaConfig.FONT_CORRESPONDANCE_TABLE.get(re.sub(r"^\s+|\s+$", "", x.title())),
+    'font-family': lambda x: LiveCartaConfig.FONT_CORRESPONDANCE_TABLE.get(re.sub(r"^\s+|\s+$", "", x.title()))
+    or LiveCartaConfig.FONT_CORRESPONDANCE_TABLE.get(re.sub(r"^\s+|\s+$", "", x)),
     'font-size': convert_tag_style_values,
     'color': get_text_color,
     'background-color': get_bg_color,