diff --git a/embassy-stm32/src/gpio.rs b/embassy-stm32/src/gpio.rs
index 4926e1d8a..806b5eb68 100644
--- a/embassy-stm32/src/gpio.rs
+++ b/embassy-stm32/src/gpio.rs
@@ -880,10 +880,6 @@ mod eh1 {
         }
     }
 
-    impl<'d, T: Pin> ErrorType for Flex<'d, T> {
-        type Error = Infallible;
-    }
-
     impl<'d, T: Pin> OutputPin for Flex<'d, T> {
         #[inline]
         fn set_high(&mut self) -> Result<(), Self::Error> {