diff --git a/loader/Project/Model/Src/prj_main.c b/loader/Project/Model/Src/prj_main.c
index 15add37aa..348d88d3f 100755
--- a/loader/Project/Model/Src/prj_main.c
+++ b/loader/Project/Model/Src/prj_main.c
@@ -40,6 +40,7 @@
 #define GPIO_FASTBOOT_KEY GPIO_KEY_TEST
 #define GPIO_SPECIAL_KEY GPIO_KEY_TEST
 #define GPIO_SPECIAL_KEY2 GPIO_ISP_KEY_DET
+#define GPIO_SPECIAL_USB D_GPIO_7
 /* Unknown */
 #else
 #error "Unknown Model"
@@ -106,7 +107,7 @@ static BOOL prj_isSpecialKeyPressed(void)
         debug_msg("GPIO_SPECIAL_KEY2 0\r\n");
     }*/
 
-	if (!gpio_getPin(GPIO_SPECIAL_KEY)) {
+	if ((!gpio_getPin(GPIO_SPECIAL_KEY)) && (gpio_getPin(GPIO_SPECIAL_USB))) {
 		return TRUE;
 	}
     else if(!(gpio_getPin(GPIO_SPECIAL_KEY2))){