diff --git a/targets/TARGET_STM/TARGET_STM32WB/i2c_device.c b/targets/TARGET_STM/TARGET_STM32WB/i2c_device.c
index 9b99d3a054..798f4e802f 100755
--- a/targets/TARGET_STM/TARGET_STM32WB/i2c_device.c
+++ b/targets/TARGET_STM/TARGET_STM32WB/i2c_device.c
@@ -46,7 +46,7 @@ uint32_t i2c_get_pclk(I2CName i2c)
         }
     }
 #if defined I2C2_BASE
-    if (i2c == I2C_2) {
+    else if (i2c == I2C_2) {
         clocksource = __HAL_RCC_GET_I2C2_SOURCE();
         switch (clocksource) {
             case RCC_I2C2CLKSOURCE_PCLK1:
diff --git a/targets/TARGET_STM/TARGET_STM32WL/i2c_device.c b/targets/TARGET_STM/TARGET_STM32WL/i2c_device.c
index d4c022b3b5..10c30ec239 100755
--- a/targets/TARGET_STM/TARGET_STM32WL/i2c_device.c
+++ b/targets/TARGET_STM/TARGET_STM32WL/i2c_device.c
@@ -47,7 +47,7 @@ uint32_t i2c_get_pclk(I2CName i2c)
         }
     }
 #if defined I2C2_BASE
-    if (i2c == I2C_2) {
+    else if (i2c == I2C_2) {
         clocksource = __HAL_RCC_GET_I2C2_SOURCE();
         switch (clocksource) {
             case RCC_I2C2CLKSOURCE_PCLK1: