diff --git a/arch/arm/src/efm32/efm32_serial.c b/arch/arm/src/efm32/efm32_serial.c
index 139de55a2a..92a2be9c18 100644
--- a/arch/arm/src/efm32/efm32_serial.c
+++ b/arch/arm/src/efm32/efm32_serial.c
@@ -1018,6 +1018,7 @@ static int efm32_ioctl(struct file *filep, int cmd, unsigned long arg)
           config->baud = cfgetispeed(termiosp);
 
           /* Just speed is yet implemented */
+
           efm32_disableuartint(priv,&ien);
 
           efm32_uartconfigure(config->uartbase, config->baud, config->parity,
diff --git a/arch/arm/src/stm32/stm32_serial.c b/arch/arm/src/stm32/stm32_serial.c
index 95d202e666..077bb71641 100644
--- a/arch/arm/src/stm32/stm32_serial.c
+++ b/arch/arm/src/stm32/stm32_serial.c
@@ -2045,7 +2045,7 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
 
         priv->baud = cfgetispeed(termiosp);
 
-        /* effect the changes immediately - note that we do not implement
+        /* Effect the changes immediately - note that we do not implement
          * TCSADRAIN / TCSAFLUSH
          */