diff --git a/arch/arm/src/stm32f0l0g0/stm32_serial_v1.c b/arch/arm/src/stm32f0l0g0/stm32_serial_v1.c
index a71a4c9e119..82f12a777a4 100644
--- a/arch/arm/src/stm32f0l0g0/stm32_serial_v1.c
+++ b/arch/arm/src/stm32f0l0g0/stm32_serial_v1.c
@@ -1603,7 +1603,9 @@ static int stm32serial_ioctl(FAR struct file *filep, int cmd,
 
         if ((arg & SER_SINGLEWIRE_ENABLED) != 0)
           {
-            uint32_t gpio_val = GPIO_OPENDRAIN;
+            uint32_t gpio_val = (arg & SER_SINGLEWIRE_PUSHPULL) ==
+                                 SER_SINGLEWIRE_PUSHPULL ?
+                                 GPIO_PUSHPULL : GPIO_OPENDRAIN;
             gpio_val |= (arg & SER_SINGLEWIRE_PULL_MASK) == SER_SINGLEWIRE_PULLUP ? GPIO_PULLUP : GPIO_FLOAT;
             gpio_val |= (arg & SER_SINGLEWIRE_PULL_MASK) == SER_SINGLEWIRE_PULLDOWN ? GPIO_PULLDOWN : GPIO_FLOAT;
             stm32_configgpio((priv->tx_gpio & ~(GPIO_PUPD_MASK | GPIO_OPENDRAIN)) | gpio_val);
diff --git a/arch/arm/src/stm32f0l0g0/stm32_serial_v2.c b/arch/arm/src/stm32f0l0g0/stm32_serial_v2.c
index 1b0d0ce7204..0bfb3420a88 100644
--- a/arch/arm/src/stm32f0l0g0/stm32_serial_v2.c
+++ b/arch/arm/src/stm32f0l0g0/stm32_serial_v2.c
@@ -1162,7 +1162,9 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
 
         if ((arg & SER_SINGLEWIRE_ENABLED) != 0)
           {
-            uint32_t gpio_val = GPIO_OPENDRAIN;
+            uint32_t gpio_val = (arg & SER_SINGLEWIRE_PUSHPULL) ==
+                                 SER_SINGLEWIRE_PUSHPULL ?
+                                 GPIO_PUSHPULL : GPIO_OPENDRAIN;
             gpio_val |= (arg & SER_SINGLEWIRE_PULL_MASK) == SER_SINGLEWIRE_PULLUP ? GPIO_PULLUP : GPIO_FLOAT;
             gpio_val |= (arg & SER_SINGLEWIRE_PULL_MASK) == SER_SINGLEWIRE_PULLDOWN ? GPIO_PULLDOWN : GPIO_FLOAT;
             stm32_configgpio((priv->tx_gpio & ~(GPIO_PUPD_MASK | GPIO_OPENDRAIN)) | gpio_val);