diff --git a/hal/src/peripherals/timer/d11.rs b/hal/src/peripherals/timer/d11.rs
index b484eabf417..8b36b16fa23 100644
--- a/hal/src/peripherals/timer/d11.rs
+++ b/hal/src/peripherals/timer/d11.rs
@@ -57,11 +57,11 @@ where
         // need to manually read the bit here
         while count.ctrla().read().bits() & 1 != 0 {}
 
-        count.ctrlbset().write(|w| {
+        count.ctrlbclr().write(|w| {
             // Count up when the direction bit is zero
-            w.dir().clear_bit();
+            w.dir().set_bit();
             // Periodic
-            w.oneshot().clear_bit()
+            w.oneshot().set_bit()
         });
 
         // Set TOP value for mfrq mode
diff --git a/hal/src/peripherals/timer/d5x.rs b/hal/src/peripherals/timer/d5x.rs
index 260f7e2f7b6..4290e9c3b22 100644
--- a/hal/src/peripherals/timer/d5x.rs
+++ b/hal/src/peripherals/timer/d5x.rs
@@ -55,11 +55,11 @@ where
         count.ctrla().write(|w| w.swrst().set_bit());
         while count.syncbusy().read().swrst().bit_is_set() {}
 
-        count.ctrlbset().write(|w| {
+        count.ctrlbclr().write(|w| {
             // Count up when the direction bit is zero
-            w.dir().clear_bit();
+            w.dir().set_bit();
             // Periodic
-            w.oneshot().clear_bit()
+            w.oneshot().set_bit()
         });
 
         // Set TOP value for mfrq mode