diff --git a/src/vs/editor/common/config/commonEditorConfig.ts b/src/vs/editor/common/config/commonEditorConfig.ts
index e70e5773cb2..6151b38a212 100644
--- a/src/vs/editor/common/config/commonEditorConfig.ts
+++ b/src/vs/editor/common/config/commonEditorConfig.ts
@@ -592,6 +592,7 @@ let editorConfiguration:IConfigurationNode = {
 		},
 		'editor.fontWeight' : {
 			'type': 'string',
+			'enum': ['normal', 'bold', '100', '200', '300', '400', '500', '600', '700', '800', '900'],
 			'default': DefaultConfig.editor.fontWeight,
 			'description': nls.localize('fontWeight', "Controls the font weight.")
 		},