diff --git a/bsp/stm32f10x/touch.c b/bsp/stm32f10x/touch.c
index aeddda599ba1e793d4b9ecfdea8be701a6f72689..b672ccdb4d42f6205e8f16a17eab93a38309ba08 100644
--- a/bsp/stm32f10x/touch.c
+++ b/bsp/stm32f10x/touch.c
@@ -196,6 +196,10 @@ void touch_timeout(void* parameter)
         rt_uint32_t y;
     } touch_previous;
 
+    /* touch time is too short and we lost the position already. */
+    if ((!touch_down) && GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_0) != 0)
+        return;
+
     if (GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_1) != 0)
     {
         int tmer = RT_TICK_PER_SECOND/8 ;