diff --git a/packages/accounts-base-pg-driver/accounts-base-pg-driver.js b/packages/accounts-base-pg-driver/accounts-base-pg-driver.js
index 998fc60..52c564a 100644
--- a/packages/accounts-base-pg-driver/accounts-base-pg-driver.js
+++ b/packages/accounts-base-pg-driver/accounts-base-pg-driver.js
@@ -8,6 +8,7 @@ AccountsDBClientPG = class AccountsDBClientPG {
   // format the userID to the datatype used by storage backend
   // e.g. postgres is using userId as an integer
   formatUserIdToDbType(userId) {
+    let currentInvocation = DDP._CurrentInvocation.get();
     return parseInt(currentInvocation.userId, 10);
   }