diff --git a/vulkan-rs/src/surface.rs b/vulkan-rs/src/surface.rs
index 9719ddd..80674ed 100644
--- a/vulkan-rs/src/surface.rs
+++ b/vulkan-rs/src/surface.rs
@@ -8,7 +8,6 @@ const UNORM_FORMATS: [VkFormat; 2] = [VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8
 
 #[derive(Debug)]
 pub struct Surface {
-    external_source: bool,
     instance: Arc<Instance>,
     surface: VkSurfaceKHR,
 }
@@ -16,7 +15,6 @@ pub struct Surface {
 impl Surface {
     pub fn from_vk_surface(surface: VkSurfaceKHR, instance: &Arc<Instance>) -> Arc<Surface> {
         Arc::new(Surface {
-            external_source: true,
             instance: instance.clone(),
             surface,
         })
@@ -73,8 +71,6 @@ impl_vk_handle!(Surface, VkSurfaceKHR, surface);
 
 impl Drop for Surface {
     fn drop(&mut self) {
-        if !self.external_source {
-            self.instance.destroy_surface(self.surface)
-        }
+        self.instance.destroy_surface(self.surface)
     }
 }