diff --git a/src/mentions/schema.js b/src/mentions/schema.js
index fda5da4..d42d26c 100644
--- a/src/mentions/schema.js
+++ b/src/mentions/schema.js
@@ -59,7 +59,7 @@ const mentionNode = {
 
 const addMentionNodes = nodes => nodes.append({ mention: mentionNode });
 
-const schemaWithMentions = new Schema({
+export const schemaWithMentions = new Schema({
   nodes: addMentionNodes(schema.spec.nodes),
   marks: schema.spec.marks,
 });