diff --git a/src/app/workflow-spec-list/workflow-spec-list.component.html b/src/app/workflow-spec-list/workflow-spec-list.component.html
index 7fa89fd..524386c 100644
--- a/src/app/workflow-spec-list/workflow-spec-list.component.html
+++ b/src/app/workflow-spec-list/workflow-spec-list.component.html
@@ -110,7 +110,7 @@
                 <mat-icon>edit</mat-icon>
               </button>
               <button
-                *ngIf="cat.display_order > 0"
+                *ngIf="!cat[0]"
                 mat-mini-fab
                 title="Move up"
                 color="primary"
@@ -119,7 +119,7 @@
                 <mat-icon>arrow_upward</mat-icon>
               </button>
               <button
-                *ngIf="cat.display_order < workflowSpecsByCategory.length - 2"
+                *ngIf="!cat[workflowSpecsByCategory.length-1]"
                 mat-mini-fab
                 title="Move down"
                 color="primary"