diff --git a/embassy-stm32/src/spi/v3.rs b/embassy-stm32/src/spi/v3.rs
index bd3c74288..2df2b49b6 100644
--- a/embassy-stm32/src/spi/v3.rs
+++ b/embassy-stm32/src/spi/v3.rs
@@ -34,6 +34,7 @@ impl WordSize {
     }
 }
 
+#[allow(unused)]
 pub struct Spi<'d, T: Instance, Tx = NoDma, Rx = NoDma> {
     sck: AnyPin,
     mosi: AnyPin,