diff --git a/src/services/sessionService.js b/src/services/sessionService.js
index 2438d05..96341ec 100644
--- a/src/services/sessionService.js
+++ b/src/services/sessionService.js
@@ -54,7 +54,7 @@ class SessionServiceProvider {
         throw Error('Public key is not signed up.');
       }
 
-      return models.SessionRelatedToPublickey.create({
+      return this.models.SessionRelatedToPublickey.create({
         uuid: uuid.v7(),
         session_uuid: sessionUuid,
         public_key: publicKey,