diff --git a/azurerm/resource_arm_app_service_slot.go b/azurerm/resource_arm_app_service_slot.go
index 5b5845a4593d..3704040506a3 100644
--- a/azurerm/resource_arm_app_service_slot.go
+++ b/azurerm/resource_arm_app_service_slot.go
@@ -250,7 +250,7 @@ func resourceArmAppServiceSlotCreateUpdate(d *schema.ResourceData, meta interfac
 		}
 		_, err := client.UpdateSlot(ctx, resGroup, appServiceName, sitePatchResource, slot)
 		if err != nil {
-			return fmt.Errorf("Error updating Managed Service Identity for App Service App Service Slot %q/%q: %+v", appServiceName, slot, err)
+			return fmt.Errorf("Error updating Managed Service Identity for App Service Slot %q/%q: %+v", appServiceName, slot, err)
 		}
 	}