diff --git a/arch/arm/src/stm32f0/stm32f0_serial.c b/arch/arm/src/stm32f0/stm32f0_serial.c
index 3a188917ee..824d8a7361 100644
--- a/arch/arm/src/stm32f0/stm32f0_serial.c
+++ b/arch/arm/src/stm32f0/stm32f0_serial.c
@@ -1665,7 +1665,7 @@ static int stm32f0serial_ioctl(FAR struct file *filep, int cmd,
         /* Perform some sanity checks before accepting any changes */
 
         if (((termiosp->c_cflag & CSIZE) != CS8)
-#ifdef CONFIG_SERIAL_IFLOWCONTROL
+#ifdef CONFIG_SERIAL_OFLOWCONTROL
             || ((termiosp->c_cflag & CCTS_OFLOW) && (priv->cts_gpio == 0))
 #endif
 #ifdef CONFIG_SERIAL_IFLOWCONTROL
diff --git a/arch/arm/src/stm32f7/stm32_serial.c b/arch/arm/src/stm32f7/stm32_serial.c
index b20227489a..d9e037a08e 100644
--- a/arch/arm/src/stm32f7/stm32_serial.c
+++ b/arch/arm/src/stm32f7/stm32_serial.c
@@ -2196,7 +2196,7 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
         /* Perform some sanity checks before accepting any changes */
 
         if (((termiosp->c_cflag & CSIZE) != CS8)
-#ifdef CONFIG_SERIAL_IFLOWCONTROL
+#ifdef CONFIG_SERIAL_OFLOWCONTROL
             || ((termiosp->c_cflag & CCTS_OFLOW) && (priv->cts_gpio == 0))
 #endif
 #ifdef CONFIG_SERIAL_IFLOWCONTROL
diff --git a/arch/arm/src/stm32h7/stm32_serial.c b/arch/arm/src/stm32h7/stm32_serial.c
index 897114de66..8254b55505 100644
--- a/arch/arm/src/stm32h7/stm32_serial.c
+++ b/arch/arm/src/stm32h7/stm32_serial.c
@@ -1603,7 +1603,7 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
         /* Perform some sanity checks before accepting any changes */
 
         if (((termiosp->c_cflag & CSIZE) != CS8)
-#ifdef CONFIG_SERIAL_IFLOWCONTROL
+#ifdef CONFIG_SERIAL_OFLOWCONTROL
             || ((termiosp->c_cflag & CCTS_OFLOW) && (priv->cts_gpio == 0))
 #endif
 #ifdef CONFIG_SERIAL_IFLOWCONTROL
diff --git a/arch/arm/src/stm32l4/stm32l4_serial.c b/arch/arm/src/stm32l4/stm32l4_serial.c
index fcb3414c54..e9b5548e22 100644
--- a/arch/arm/src/stm32l4/stm32l4_serial.c
+++ b/arch/arm/src/stm32l4/stm32l4_serial.c
@@ -1857,7 +1857,7 @@ static int stm32l4serial_ioctl(FAR struct file *filep, int cmd,
         /* Perform some sanity checks before accepting any changes */
 
         if (((termiosp->c_cflag & CSIZE) != CS8)
-#ifdef CONFIG_SERIAL_IFLOWCONTROL
+#ifdef CONFIG_SERIAL_OFLOWCONTROL
             || ((termiosp->c_cflag & CCTS_OFLOW) && (priv->cts_gpio == 0))
 #endif
 #ifdef CONFIG_SERIAL_IFLOWCONTROL