diff --git a/code/application/source/sf_app/code/source/app/sf_system.c b/code/application/source/sf_app/code/source/app/sf_system.c
index 7060ae756..5f3fa1ef7 100755
--- a/code/application/source/sf_app/code/source/app/sf_system.c
+++ b/code/application/source/sf_app/code/source/app/sf_system.c
@@ -700,7 +700,7 @@ SINT32 app_system_poweroff(SF_POWEROFF_TYPE_E enType )
     #if SF_QLOG_ENABLE
 	if(puiPara->QLogSwitch)
 	{
-		system("killall qlog");
+		system("killall QLog");
 	}
 	#endif
 	//if((puiPara->DebugMode) || (puiPara->QLogSwitch)){