diff --git a/drivers/counter/stm32-lptimer-cnt.c b/drivers/counter/stm32-lptimer-cnt.c
index 0f7d3f1ec1b6120c055d1bc219d3886ed2d489d4..c19d998df5bad3357ec90cc88e4932e8761521f9 100644
--- a/drivers/counter/stm32-lptimer-cnt.c
+++ b/drivers/counter/stm32-lptimer-cnt.c
@@ -146,7 +146,7 @@ enum stm32_lptim_synapse_action {
 	STM32_LPTIM_SYNAPSE_ACTION_NONE,
 };
 
-static enum counter_synapse_action stm32_lptim_cnt_synapse_actions[] = {
+static const enum counter_synapse_action stm32_lptim_cnt_synapse_actions[] = {
 	/* Index must match with stm32_lptim_cnt_polarity[] (priv->polarity) */
 	[STM32_LPTIM_SYNAPSE_ACTION_RISING_EDGE] = COUNTER_SYNAPSE_ACTION_RISING_EDGE,
 	[STM32_LPTIM_SYNAPSE_ACTION_FALLING_EDGE] = COUNTER_SYNAPSE_ACTION_FALLING_EDGE,