diff --git a/src/structures/ring_buffer.rs b/src/structures/ring_buffer.rs
index 72b9c6f..2af8c9f 100644
--- a/src/structures/ring_buffer.rs
+++ b/src/structures/ring_buffer.rs
@@ -10,7 +10,7 @@ use crate::{
     SoftSerialWriter,
 };
 
-#[cfg(feature = "ring-buffer")]
+#[cfg(feature = "ring-buf")]
 impl<const N: usize, P> SoftSerialWriter<P, &mut RingBuffer<N>> for HalfDuplexSerial<P>
 where
     P: PinOps + StaticPinOps,
@@ -26,7 +26,7 @@ where
     }
 }
 
-#[cfg(feature = "ring-buffer")]
+#[cfg(feature = "ring-buf")]
 impl<const N: usize, P> SoftSerialReader<P, &mut RingBuffer<N>> for HalfDuplexSerial<P>
 where
     P: PinOps + StaticPinOps,