diff --git a/drivers/clock_control/clock_stm32_ll_h5.c b/drivers/clock_control/clock_stm32_ll_h5.c
index e4423f3162aa0c..6ad08d1ee3b933 100644
--- a/drivers/clock_control/clock_stm32_ll_h5.c
+++ b/drivers/clock_control/clock_stm32_ll_h5.c
@@ -696,8 +696,8 @@ static void set_up_fixed_clock_sources(void)
 
 int stm32_clock_control_init(const struct device *dev)
 {
-	uint32_t old_hclk_freq = 0;
-	int r = 0;
+	uint32_t old_hclk_freq;
+	int r;
 
 	ARG_UNUSED(dev);
 
diff --git a/drivers/clock_control/clock_stm32_ll_h7.c b/drivers/clock_control/clock_stm32_ll_h7.c
index bcd1873dd81a54..b11e2b5c9f5b6b 100644
--- a/drivers/clock_control/clock_stm32_ll_h7.c
+++ b/drivers/clock_control/clock_stm32_ll_h7.c
@@ -835,8 +835,8 @@ int stm32_clock_control_init(const struct device *dev)
 	int r = 0;
 
 #if defined(CONFIG_CPU_CORTEX_M7)
-	uint32_t old_hclk_freq = 0;
-	uint32_t new_hclk_freq = 0;
+	uint32_t old_hclk_freq;
+	uint32_t new_hclk_freq;
 
 	/* HW semaphore Clock enable */
 #if defined(CONFIG_SOC_STM32H7A3XX) || defined(CONFIG_SOC_STM32H7A3XXQ) || \
diff --git a/drivers/clock_control/clock_stm32_ll_u5.c b/drivers/clock_control/clock_stm32_ll_u5.c
index f28fd6338b8b2e..fc16b5e46e47b0 100644
--- a/drivers/clock_control/clock_stm32_ll_u5.c
+++ b/drivers/clock_control/clock_stm32_ll_u5.c
@@ -804,8 +804,8 @@ static void set_up_fixed_clock_sources(void)
 
 int stm32_clock_control_init(const struct device *dev)
 {
-	uint32_t old_hclk_freq = 0;
-	int r = 0;
+	uint32_t old_hclk_freq;
+	int r;
 
 	ARG_UNUSED(dev);
 
diff --git a/drivers/clock_control/clock_stm32_ll_wba.c b/drivers/clock_control/clock_stm32_ll_wba.c
index fc5b1751eb51dc..36cf52064dac51 100644
--- a/drivers/clock_control/clock_stm32_ll_wba.c
+++ b/drivers/clock_control/clock_stm32_ll_wba.c
@@ -510,7 +510,7 @@ static void set_up_fixed_clock_sources(void)
 int stm32_clock_control_init(const struct device *dev)
 {
 	uint32_t old_flash_freq;
-	int r = 0;
+	int r;
 
 	ARG_UNUSED(dev);