diff --git a/c/src/p2fa.c b/c/src/p2fa.c
index 1b93e70..51f99f1 100644
--- a/c/src/p2fa.c
+++ b/c/src/p2fa.c
@@ -20,8 +20,6 @@ void Handler(int sigNum) {
 
     Debug("Goto Sleep...\r\n");
     EPD_2in13_V4_Sleep();
-    free(BlackImage);
-    BlackImage = NULL;
 
     DEV_Delay_ms(2000);//important, at least 2s
     Debug("close 5V, Module enters 0 power consumption ...\r\n");