diff --git a/app/Listeners/ActivityListener.php b/app/Listeners/ActivityListener.php
index ee016cbff39b..6c7b1d125ce9 100644
--- a/app/Listeners/ActivityListener.php
+++ b/app/Listeners/ActivityListener.php
@@ -127,10 +127,6 @@ class ActivityListener
      */
     public function updatedInvoice(InvoiceWasUpdated $event)
     {
-        if (! $event->invoice->isChanged()) {
-            return;
-        }
-
         $backupInvoice = Invoice::with('invoice_items', 'client.account', 'client.contacts')
                             ->withArchived()
                             ->find($event->invoice->id);
diff --git a/app/Models/Invoice.php b/app/Models/Invoice.php
index 2e7b9287f23f..61fea0efdbd9 100644
--- a/app/Models/Invoice.php
+++ b/app/Models/Invoice.php
@@ -189,33 +189,6 @@ class Invoice extends EntityModel implements BalanceAffecting
         return floatval($this->amount) - floatval($this->getOriginal('amount'));
     }
 
-    /**
-     * @return bool
-     */
-    public function isChanged()
-    {
-        if ($this->getRawAdjustment() != 0) {
-            return true;
-        }
-
-        foreach ([
-            'invoice_number',
-            'po_number',
-            'invoice_date',
-            'due_date',
-            'terms',
-            'public_notes',
-            'invoice_footer',
-            'partial',
-        ] as $field) {
-            if ($this->$field != $this->getOriginal($field)) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
     /**
      * @param bool $calculate
      * @return int|mixed
@@ -597,7 +570,7 @@ class Invoice extends EntityModel implements BalanceAffecting
             return false;
         }
 
-        // it isn't considered overdue until the end of the day 
+        // it isn't considered overdue until the end of the day
         return time() > (strtotime($dueDate) + (60*60*24));
     }