diff --git a/ports/stm/common-hal/rgbmatrix/RGBMatrix.c b/ports/stm/common-hal/rgbmatrix/RGBMatrix.c
index 3b42631adc..2826cf53e9 100644
--- a/ports/stm/common-hal/rgbmatrix/RGBMatrix.c
+++ b/ports/stm/common-hal/rgbmatrix/RGBMatrix.c
@@ -36,6 +36,7 @@ extern void _PM_IRQ_HANDLER(void);
 void *common_hal_rgbmatrix_timer_allocate() {
     TIM_TypeDef * timer = stm_peripherals_find_timer();
     stm_peripherals_timer_reserve(timer);
+    stm_peripherals_timer_never_reset(timer);
     return timer;
 }
 
diff --git a/ports/stm/peripherals/timers.c b/ports/stm/peripherals/timers.c
index baa81d2b5f..7bc5ea495a 100644
--- a/ports/stm/peripherals/timers.c
+++ b/ports/stm/peripherals/timers.c
@@ -195,9 +195,7 @@ TIM_TypeDef * stm_peripherals_find_timer(void) {
         // If no results are found, no unclaimed pins with this timer are in this package,
         // and it is safe to pick
         if (timer_in_package == false && mcu_tim_banks[i] != NULL) {
-            // DEBUG: print the timer
             return mcu_tim_banks[i];
-            mp_printf(&mp_plat_print, "Timer: %d\n",i);
         }
     }
     //TODO: secondary search for timers outside the pins in the board profile
@@ -205,8 +203,6 @@ TIM_TypeDef * stm_peripherals_find_timer(void) {
     // Work backwards - higher index timers have fewer pin allocations
     for (size_t i = (MP_ARRAY_SIZE(mcu_tim_banks) - 1); i >= 0; i--) {
         if ((!stm_timer_reserved[i]) && (mcu_tim_banks[i] != NULL)) {
-            // DEBUG: print the timer
-            mp_printf(&mp_plat_print, "Timer: %d\n",i);
             return mcu_tim_banks[i];
         }
     }