1 files changed, 1 insertions, 0 deletions

diff --git a/examples/stm32f4/src/bin/usb_serial.rs b/examples/stm32f4/src/bin/usb_serial.rs
index 21e255612..6080b34a8 100644
--- a/examples/stm32f4/src/bin/usb_serial.rs
+++ b/examples/stm32f4/src/bin/usb_serial.rs
@@ -39,6 +39,7 @@ async fn main(_spawner: Spawner) {
         config.rcc.apb1_pre = APBPrescaler::DIV4;
         config.rcc.apb2_pre = APBPrescaler::DIV2;
         config.rcc.sys = Sysclk::PLL1_P;
+        config.rcc.mux.clk48sel = mux::Clk48sel::PLL1_Q;
     }
     let p = embassy_stm32::init(config);