diff --git a/source/Clean.js b/source/Clean.js
index b03b3b8..79f3f53 100644
--- a/source/Clean.js
+++ b/source/Clean.js
@@ -30,7 +30,7 @@ var styleToSemantic = {
         }
     },
     fontWeight: {
-        regexp: /^bold/i,
+        regexp: /^bold|^700/i,
         replace: function ( doc ) {
             return createElement( doc, 'B' );
         }