diff --git a/src/scu/ccu.rs b/src/scu/ccu.rs
index 2dfe472..66ac875 100644
--- a/src/scu/ccu.rs
+++ b/src/scu/ccu.rs
@@ -596,10 +596,10 @@ const SYSCLK_FREQUENCY: u32 = 20_000_000;
 #[inline]
 pub(crate) fn get_osc_frequency() -> f32 {
     // SAFETY: each bit of SYSPLLCON0 is at least R, except for bit RESLD (W, if read always return 0)
-    let f = match unsafe { SCU.syspllcon0().read() }.insel().get() {
-        scu::syspllcon0::Insel::CONST_00 => EVR_OSC_FREQUENCY,
-        scu::syspllcon0::Insel::CONST_11 => XTAL_FREQUENCY,
-        scu::syspllcon0::Insel::CONST_22 => SYSCLK_FREQUENCY,
+    let f = match unsafe { SCU.syspllcon0().read() }.insel().get().0 {
+        0 => EVR_OSC_FREQUENCY,
+        1 => XTAL_FREQUENCY,
+        2 => SYSCLK_FREQUENCY,
         _ => 0,
     };
     f as f32