diff --git a/bsp/stm32f40x/drivers/gpio.c b/bsp/stm32f40x/drivers/gpio.c
index 61fb8b3977..8d8ac42bbf 100644
--- a/bsp/stm32f40x/drivers/gpio.c
+++ b/bsp/stm32f40x/drivers/gpio.c
@@ -763,7 +763,7 @@ rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32
     }
     else if (enabled == PIN_IRQ_DISABLE)
     {
-        irq = get_pin_irq(index->pin);
+        irq = get_pin_irq(pin);
         if (irq == RT_NULL)
         {
             return -RT_ENOSYS;