diff --git a/src/compose.rs b/src/compose.rs
index 8ade4f58..5eac340b 100644
--- a/src/compose.rs
+++ b/src/compose.rs
@@ -44,6 +44,7 @@ where
         *image.get_pixel(rect.x + x, rect.y + y)
     })
 }
+#[cfg(feature = "rayon")]
 #[doc = generate_parallel_doc_comment!("crop")]
 pub fn crop_parallel<P>(image: &Image<P>, rect: Rect) -> Image<P>
 where