diff --git a/c/src/p2fa.c b/c/src/p2fa.c
index a53b20f..eae1bb9 100644
--- a/c/src/p2fa.c
+++ b/c/src/p2fa.c
@@ -23,7 +23,7 @@ int main() {
     return 0;
 }
 
-__declspec(dllexport) int draw() {
+int draw() {
     Debug("EPD_2in13_V4_test Demo\r\n");
     if(DEV_Module_Init()!=0){
         return -1;
@@ -160,6 +160,4 @@ __declspec(dllexport) int draw() {
     Debug("close 5V, Module enters 0 power consumption ...\r\n");
     DEV_Module_Exit();
     return 0;
-
-    return 0;
 }