diff --git a/app/Console/Commands/UpgradeDatabase.php b/app/Console/Commands/UpgradeDatabase.php
index bb96f18643..dcaebf9050 100644
--- a/app/Console/Commands/UpgradeDatabase.php
+++ b/app/Console/Commands/UpgradeDatabase.php
@@ -102,18 +102,25 @@ class UpgradeDatabase extends Command
         /** @var PiggyBankEvent $event */
         foreach ($set as $event) {
 
-            if (!is_null($event->transaction_journal_id)) {
-                $type = $event->transactionJournal->transactionType->type;
-                if ($type !== TransactionType::TRANSFER) {
-                    $event->transaction_journal_id = null;
-                    $event->save();
-                    $this->line(
-                        sprintf('Piggy bank #%d ("%s") was referenced by an invalid event. This has been fixed.', $event->piggy_bank_id,
+            if (is_null($event->transaction_journal_id)) {
+                continue;
+            }
+            /** @var TransactionJournal $journal */
+            $journal = $event->transactionJournal()->first();
+            if (is_null($journal)) {
+                continue;
+            }
+
+            $type = $journal->transactionType->type;
+            if ($type !== TransactionType::TRANSFER) {
+                $event->transaction_journal_id = null;
+                $event->save();
+                $this->line(
+                    sprintf(
+                        'Piggy bank #%d ("%s") was referenced by an invalid event. This has been fixed.', $event->piggy_bank_id,
                         $event->piggyBank->name
-                    ));
-                }
-
-
+                    )
+                );
             }
         }
     }