diff --git a/mod_form.php b/mod_form.php
index 773956c0..48250c18 100644
--- a/mod_form.php
+++ b/mod_form.php
@@ -1011,7 +1011,7 @@ public function validation($data, $files) {
         // Only check for scheduled meetings.
         if (empty($data['recurring'])) {
             // Make sure start date is in the future.
-            if ($data['start_time'] < time()) {
+            if ($data['start_time'] < time() && $data['meeting_id'] < 0) {
                 $errors['start_time'] = get_string('err_start_time_past', 'zoom');
             }
 
@@ -1023,7 +1023,7 @@ public function validation($data, $files) {
             }
         } else if ($data['recurring'] == 1 && $data['recurrence_type'] != ZOOM_RECURRINGTYPE_NOTIME) {
             // Make sure start date time (first potential date of next meeting) is in the future.
-            if ($data['start_time'] < time()) {
+            if ($data['start_time'] < time() && $data['meeting_id'] < 0) {
                 $errors['start_time'] = get_string('err_start_time_past_recurring', 'zoom');
             }