diff --git a/embassy-stm32/src/rcc/g4.rs b/embassy-stm32/src/rcc/g4.rs
index edd14ab23..c9ac2bb0b 100644
--- a/embassy-stm32/src/rcc/g4.rs
+++ b/embassy-stm32/src/rcc/g4.rs
@@ -357,13 +357,13 @@ mod max {
     pub(crate) const HSE_BYP: RangeInclusive<Hertz> = Hertz(0)..=Hertz(48_000_000);
 
     /// SYSCLK ?-170MHz (RM0440 p282)
-    pub(crate) const SYSCLK: RangeInclusive<Hertz> = Hertz(0)..=Hertz(170_000_000);
+    //pub(crate) const SYSCLK: RangeInclusive<Hertz> = Hertz(0)..=Hertz(170_000_000);
 
     /// PLL Output frequency ?-170MHz (RM0440 p281)
-    pub(crate) const PCLK: RangeInclusive<Hertz> = Hertz(0)..=Hertz(170_000_000);
+    //pub(crate) const PCLK: RangeInclusive<Hertz> = Hertz(0)..=Hertz(170_000_000);
 
     // Left over from f.rs, remove if not necessary
-    pub(crate) const HCLK: RangeInclusive<Hertz> = Hertz(12_500_000)..=Hertz(216_000_000);
-    pub(crate) const PLL_IN: RangeInclusive<Hertz> = Hertz(1_000_000)..=Hertz(2_100_000);
-    pub(crate) const PLL_VCO: RangeInclusive<Hertz> = Hertz(100_000_000)..=Hertz(432_000_000);
+    //pub(crate) const HCLK: RangeInclusive<Hertz> = Hertz(12_500_000)..=Hertz(216_000_000);
+    //pub(crate) const PLL_IN: RangeInclusive<Hertz> = Hertz(1_000_000)..=Hertz(2_100_000);
+    //pub(crate) const PLL_VCO: RangeInclusive<Hertz> = Hertz(100_000_000)..=Hertz(432_000_000);
 }