diff --git a/gstreamer/src/buffer.rs b/gstreamer/src/buffer.rs
index 7aece9a01..1743ef73d 100644
--- a/gstreamer/src/buffer.rs
+++ b/gstreamer/src/buffer.rs
@@ -751,8 +751,6 @@ macro_rules! define_meta_iter(
             }
         }
     }
-
-    impl<'a, T: MetaAPI> ExactSizeIterator for $name<'a, T> {}
     }
 );