diff --git a/src/routes/auth.js b/src/routes/auth.js
index f621171..bf763d6 100644
--- a/src/routes/auth.js
+++ b/src/routes/auth.js
@@ -64,7 +64,7 @@ export const authRoutes = (fastify, _, done) => {
                     }
                     let session_id;
                     let existing_session = await tx.select().from(sessions).where(eq(sessions.user_id, user.id));
-                    if (existing_session.length === 0) {
+                    if (!existing_session || existing_session.length === 0) {
                         let session_info = await createSession(user.id, {
                             access_token: token.access_token,
                             refresh_token: token.refresh_token,