diff --git a/forms/gridfield/GridFieldAddExistingAutocompleter.php b/forms/gridfield/GridFieldAddExistingAutocompleter.php
index d1990ef07..e27af945b 100644
--- a/forms/gridfield/GridFieldAddExistingAutocompleter.php
+++ b/forms/gridfield/GridFieldAddExistingAutocompleter.php
@@ -231,6 +231,11 @@ class GridFieldAddExistingAutocompleter
 
 		$json = array();
 		foreach($results as $result) {
+			// Prevent a circular reference and associated error in CMS/admin
+			$hideFromSearch = ($gridField->getForm()->getRecord() && ($result->ID == $gridField->getForm()->getRecord()->ID));
+			if($hideFromSearch) {
+				continue;
+			}
 			$json[$result->ID] = SSViewer::fromString($this->resultsFormat)->process($result);
 		}
 		return Convert::array2json($json);