diff --git a/svglib/svglib.py b/svglib/svglib.py
index 727b669..1066eec 100755
--- a/svglib/svglib.py
+++ b/svglib/svglib.py
@@ -417,7 +417,8 @@ def convertFontFamily(self, fontAttr, weightAttr='normal', styleAttr='normal'):
         else:
             logger.warning(
                 f"Unable to find a suitable font for 'font-family:{fontAttr}', "
-                f"weight:{weightAttr}, style:{styleAttr}"
+                f"weight:{weightAttr}, style:{styleAttr}; "
+                "try registering it with register_font()"
             )
             return DEFAULT_FONT_NAME