diff --git a/app/Services/Invoice/UpdateReminder.php b/app/Services/Invoice/UpdateReminder.php
index 50148c23670c..52f604263e0a 100644
--- a/app/Services/Invoice/UpdateReminder.php
+++ b/app/Services/Invoice/UpdateReminder.php
@@ -58,6 +58,7 @@ class UpdateReminder extends AbstractService
         }
 
         if (is_null($this->invoice->reminder1_sent) &&
+            $this->invoice->due_date &&
             $this->settings->schedule_reminder1 == 'before_due_date') {
             $reminder_date = Carbon::parse($this->invoice->due_date)->startOfDay()->subDays($this->settings->num_days_reminder1)->addSeconds($offset);
 
@@ -66,6 +67,7 @@ class UpdateReminder extends AbstractService
         }
 
         if (is_null($this->invoice->reminder1_sent) &&
+            $this->invoice->due_date &&
             $this->settings->schedule_reminder1 == 'after_due_date') {
             $reminder_date = Carbon::parse($this->invoice->due_date)->startOfDay()->addDays($this->settings->num_days_reminder1)->addSeconds($offset);
 
@@ -82,6 +84,7 @@ class UpdateReminder extends AbstractService
         }
 
         if (is_null($this->invoice->reminder2_sent) &&
+            $this->invoice->due_date &&
             $this->settings->schedule_reminder2 == 'before_due_date') {
             $reminder_date = Carbon::parse($this->invoice->due_date)->startOfDay()->subDays($this->settings->num_days_reminder2)->addSeconds($offset);
 
@@ -90,6 +93,7 @@ class UpdateReminder extends AbstractService
         }
 
         if (is_null($this->invoice->reminder2_sent) &&
+            $this->invoice->due_date &&
             $this->settings->schedule_reminder2 == 'after_due_date') {
             $reminder_date = Carbon::parse($this->invoice->due_date)->startOfDay()->addDays($this->settings->num_days_reminder2)->addSeconds($offset);
 
@@ -106,6 +110,7 @@ class UpdateReminder extends AbstractService
         }
 
         if (is_null($this->invoice->reminder3_sent) &&
+            $this->invoice->due_date &&
             $this->settings->schedule_reminder3 == 'before_due_date') {
             $reminder_date = Carbon::parse($this->invoice->due_date)->startOfDay()->subDays($this->settings->num_days_reminder3)->addSeconds($offset);
 
@@ -114,6 +119,7 @@ class UpdateReminder extends AbstractService
         }
 
         if (is_null($this->invoice->reminder3_sent) &&
+            $this->invoice->due_date &&
             $this->settings->schedule_reminder3 == 'after_due_date') {
             $reminder_date = Carbon::parse($this->invoice->due_date)->startOfDay()->addDays($this->settings->num_days_reminder3)->addSeconds($offset);