diff --git a/searchPages/searchUtils/advancedSearchForm.component.html b/searchPages/searchUtils/advancedSearchForm.component.html
index 2d46076b..bf53c7e8 100644
--- a/searchPages/searchUtils/advancedSearchForm.component.html
+++ b/searchPages/searchUtils/advancedSearchForm.component.html
@@ -26,7 +26,7 @@
 								<td class="uk-text-bold uk-text-uppercase uk-width-1-3">Searching Fields</td>
 								<td class="uk-text-bold uk-text-uppercase uk-width-2-5">Terms</td>
 							</tr>
-							<tr *ngFor="let selectedField of selectedFields; let i = index; trackBy: trackByFn">
+							<tr *ngFor="let selectedField of selectedFields; let i = index;">
 								<td>
 									<div class="uk-grid uk-flex-middle uk-child-width-1-2@m uk-child-width-1-1">
 										<div input [(value)]="selectedField.id" inputClass="border-bottom"
diff --git a/searchPages/searchUtils/advancedSearchForm.component.ts b/searchPages/searchUtils/advancedSearchForm.component.ts
index c233ea9c..2e872014 100644
--- a/searchPages/searchUtils/advancedSearchForm.component.ts
+++ b/searchPages/searchUtils/advancedSearchForm.component.ts
@@ -213,8 +213,4 @@ export class AdvancedSearchFormComponent implements OnInit, OnDestroy, OnChanges
   onlyIncludesSupported(index: number) {
     return (this.selectedFields[index] && this.selectedFields[index].operatorId === 'or') || (this.selectedFields[index+1] && this.selectedFields[index+1].operatorId === 'or')
   }
-
-  trackByFn(index, item) {
-    return item.id;
-  }
 }