diff --git a/embassy-stm32/gen.py b/embassy-stm32/gen.py
index 55612cb3..3cf93a2c 100644
--- a/embassy-stm32/gen.py
+++ b/embassy-stm32/gen.py
@@ -136,9 +136,9 @@ with open(output_file, 'w') as f:
                     if (func := funcs.get(f'{name}_D7')) != None:
                         f.write(f'impl_sdmmc_pin!({name}, D7Pin, {pin}, {func});')
 
-        if block_name == 'TimGp16':
-            if re.match('TIM[2345]$', name):
-                f.write(f'impl_timer!({name});')
+        # if block_name == 'TimGp16':
+        #     if re.match('TIM[2345]$', name):
+        #         f.write(f'impl_timer!({name});')
 
         if block_mod == 'exti':
             for irq in chip['interrupts']:
diff --git a/embassy-stm32/src/clock.rs b/embassy-stm32/src/clock.rs
index aa83c5b4..694ca666 100644
--- a/embassy-stm32/src/clock.rs
+++ b/embassy-stm32/src/clock.rs
@@ -10,6 +10,7 @@ use embassy::time::{Clock as EmbassyClock, TICKS_PER_SECOND};
 
 use crate::interrupt::{CriticalSection, Interrupt, Mutex};
 use crate::pac::timer::TimGp16;
+use crate::peripherals;
 use crate::time::Hertz;
 
 // Clock timekeeping works with something we call "periods", which are time intervals
@@ -362,15 +363,22 @@ pub trait Instance: sealed::Instance + Sized + 'static {}
 
 macro_rules! impl_timer {
     ($inst:ident) => {
-        impl crate::clock::sealed::Instance for peripherals::$inst {
+        impl sealed::Instance for peripherals::$inst {
             type Interrupt = crate::interrupt::$inst;
 
             fn inner() -> crate::clock::TimerInner {
-                const INNER: crate::clock::TimerInner = crate::clock::TimerInner(crate::pac::$inst);
+                const INNER: TimerInner = TimerInner(crate::pac::$inst);
                 INNER
             }
         }
 
-        impl crate::clock::Instance for peripherals::$inst {}
+        impl Instance for peripherals::$inst {}
     };
 }
+
+crate::pac::peripherals!(
+    (timer, TIM2) => { impl_timer!(TIM2); };
+    (timer, TIM3) => { impl_timer!(TIM3); };
+    (timer, TIM4) => { impl_timer!(TIM4); };
+    (timer, TIM5) => { impl_timer!(TIM5); };
+);