diff --git a/lib/compile.js b/lib/compile.js
index 9b53208..29e7c10 100644
--- a/lib/compile.js
+++ b/lib/compile.js
@@ -76,8 +76,21 @@ var compile = {
         } else if (/fontWeight/.test(property)) {
             if (/^(normal|bold|[1-9]00)$/.test(value)) {
                 obj[property] = '"' + value + '"';
-            } else if (/^['|"](normal|bold|[1-9]00)['|"]$/.test(value)) {
-                obj[property] = value;
+            } else if (/^['|"]?(normal|bold|[1-9]00)['|"]?$/.test(value)) {
+                obj[property] = value + '';
+            } else if (/^['|"]?(bolder|lighter|initial|inherit|unset)['|"]?$/.test(value)) {
+              switch (value) {
+                case 'bolder':
+                  obj[property] = '900';
+                  atom.notifications.addInfo('`bolder` value set to `900`')
+                  break;
+                case 'lighter':
+                  obj[property] = '200';
+                  atom.notifications.addInfo('`lighter` value set to `200`')
+                  break;
+                default:
+                  atom.notifications.addWarning('`' + value + '` value was not set')
+              }
             } else {
                 throw new Error('fontWeight value in ["normal", "bold", "100", "200", "300", "400", "500", "600", "700", "800", "900"]');
             }