1 files changed, 3 insertions, 1 deletions

diff --git a/examples/stm32f3/src/bin/usart_dma.rs b/examples/stm32f3/src/bin/usart_dma.rs
index 5234e53b9..7dc905adc 100644
--- a/examples/stm32f3/src/bin/usart_dma.rs
+++ b/examples/stm32f3/src/bin/usart_dma.rs
@@ -17,7 +17,9 @@ bind_interrupts!(struct Irqs {
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
-    let p = embassy_stm32::init(Default::default());
+    let mut init_config = embassy_stm32::Config::default();
+    init_config.rcc.cfgr3.usart1sw = Some(embassy_stm32::pac::rcc::vals::Usart1sw::HSI);
+    let p = embassy_stm32::init(init_config);
     info!("Hello World!");
 
     let config = Config::default();