diff --git a/embassy-stm32/src/adc/v2.rs b/embassy-stm32/src/adc/v2.rs
index f70170a6..b6451c9d 100644
--- a/embassy-stm32/src/adc/v2.rs
+++ b/embassy-stm32/src/adc/v2.rs
@@ -71,45 +71,41 @@ impl<T: Instance> super::sealed::AdcPin<T> for Vbat {
     }
 }
 
-mod sample_time {
-    /// ADC sample time
-    ///
-    /// The default setting is 3 ADC clock cycles.
-    #[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd)]
-    pub enum SampleTime {
-        Cycles3 = 0b000,
-        Cycles15 = 0b001,
-        Cycles28 = 0b010,
-        Cycles56 = 0b011,
-        Cycles85 = 0b100,
-        Cycles112 = 0b101,
-        Cycles144 = 0b110,
-        Cycles480 = 0b111,
-    }
+/// ADC sample time
+///
+/// The default setting is 3 ADC clock cycles.
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd)]
+pub enum SampleTime {
+    Cycles3 = 0b000,
+    Cycles15 = 0b001,
+    Cycles28 = 0b010,
+    Cycles56 = 0b011,
+    Cycles85 = 0b100,
+    Cycles112 = 0b101,
+    Cycles144 = 0b110,
+    Cycles480 = 0b111,
+}
 
-    impl SampleTime {
-        pub(crate) fn sample_time(&self) -> crate::pac::adc::vals::Smp {
-            match self {
-                SampleTime::Cycles3 => crate::pac::adc::vals::Smp::CYCLES3,
-                SampleTime::Cycles15 => crate::pac::adc::vals::Smp::CYCLES15,
-                SampleTime::Cycles28 => crate::pac::adc::vals::Smp::CYCLES28,
-                SampleTime::Cycles56 => crate::pac::adc::vals::Smp::CYCLES56,
-                SampleTime::Cycles85 => crate::pac::adc::vals::Smp::CYCLES84,
-                SampleTime::Cycles112 => crate::pac::adc::vals::Smp::CYCLES112,
-                SampleTime::Cycles144 => crate::pac::adc::vals::Smp::CYCLES144,
-                SampleTime::Cycles480 => crate::pac::adc::vals::Smp::CYCLES480,
-            }
-        }
-    }
-
-    impl Default for SampleTime {
-        fn default() -> Self {
-            Self::Cycles3
+impl SampleTime {
+    pub(crate) fn sample_time(&self) -> crate::pac::adc::vals::Smp {
+        match self {
+            SampleTime::Cycles3 => crate::pac::adc::vals::Smp::CYCLES3,
+            SampleTime::Cycles15 => crate::pac::adc::vals::Smp::CYCLES15,
+            SampleTime::Cycles28 => crate::pac::adc::vals::Smp::CYCLES28,
+            SampleTime::Cycles56 => crate::pac::adc::vals::Smp::CYCLES56,
+            SampleTime::Cycles85 => crate::pac::adc::vals::Smp::CYCLES84,
+            SampleTime::Cycles112 => crate::pac::adc::vals::Smp::CYCLES112,
+            SampleTime::Cycles144 => crate::pac::adc::vals::Smp::CYCLES144,
+            SampleTime::Cycles480 => crate::pac::adc::vals::Smp::CYCLES480,
         }
     }
 }
 
-pub use sample_time::SampleTime;
+impl Default for SampleTime {
+    fn default() -> Self {
+        Self::Cycles3
+    }
+}
 
 pub struct Adc<'d, T: Instance> {
     sample_time: SampleTime,