diff --git a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blockeditor/blockcard/blockcard.component.html b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blockeditor/blockcard/blockcard.component.html
index 4ab2c18fa7..486bcbda4a 100644
--- a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blockeditor/blockcard/blockcard.component.html
+++ b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blockeditor/blockcard/blockcard.component.html
@@ -1,5 +1,5 @@
 
-    <div class="__showcase" ng-style="{'background-color':vm.blockConfigModel.backgroundColor, 'background-image': vm.blockConfigModel.thumbnail ? 'url('+vm.blockConfigModel.thumbnail+')' : 'transparent'}">
+    <div class="__showcase" ng-style="{'background-color':vm.blockConfigModel.backgroundColor, 'background-image': vm.blockConfigModel.thumbnail ? 'url('+vm.blockConfigModel.thumbnail+'?upscale=false&width=400)' : 'transparent'}">
         <i ng-if="vm.blockConfigModel.thumbnail == null && vm.elementTypeModel.icon" class="__icon {{ vm.elementTypeModel.icon }}" ng-style="{'color':vm.blockConfigModel.iconColor}" aria-hidden="true"></i>
     </div>
     <div class="__info">