diff --git a/frontend/src/graphql/queries.js b/frontend/src/graphql/queries.js
index 9405e1631..d7d858f95 100644
--- a/frontend/src/graphql/queries.js
+++ b/frontend/src/graphql/queries.js
@@ -115,3 +115,11 @@ export const sendResetPasswordEmail = gql`
     }
   }
 `
+
+export const checkUsername = gql`
+  query($username: String!) {
+    checkUsername(username: $username) {
+      state
+    }
+  }
+`