diff --git a/src/RapidCMS.UI/Components/Editors/BasePicker.cs b/src/RapidCMS.UI/Components/Editors/BasePicker.cs
index c43d49fe..e878a35d 100644
--- a/src/RapidCMS.UI/Components/Editors/BasePicker.cs
+++ b/src/RapidCMS.UI/Components/Editors/BasePicker.cs
@@ -124,6 +124,11 @@ protected async Task SelectAllAsync()
 
     protected async Task UnselectAllAsync()
     {
+        if (RelationDataCollection == null)
+        {
+            return;
+        }
+
         var items = RelationDataCollection.GetCurrentRelatedElementIds();
         foreach (var item in items)
         {