diff --git a/app/gui/oven_control/define.h b/app/gui/oven_control/define.h
index 8803414..19641f6 100644
--- a/app/gui/oven_control/define.h
+++ b/app/gui/oven_control/define.h
@@ -5,7 +5,7 @@
 
 #define MAJOR_VER  0
 #define MINOR_VER   3
-#define HOTFIX_VER  13
+#define HOTFIX_VER  14
 
 namespace Define
 {
diff --git a/app/gui/oven_control/servicedata.cpp b/app/gui/oven_control/servicedata.cpp
index b907795..7d427a2 100644
--- a/app/gui/oven_control/servicedata.cpp
+++ b/app/gui/oven_control/servicedata.cpp
@@ -79,7 +79,7 @@ bool ServiceData::loadServiceData(void){
     if(fd>0){
         memset(buffs,0x00,FRAM_SIZE);
         read(fd,buffs,FRAM_SIZE);
-       if(buffs[sizeof(error_log) + sizeof(use_statics_log) + sizeof(sensor_statics_log) + sizeof(qint64) + sizeof(int)] != 0x9C){
+       if(buffs[sizeof(error_log) + sizeof(use_statics_log) + sizeof(sensor_statics_log)] != 0x9C){
             qDebug() <<  "service data read incorrected!";
             close(fd);
            return saveServiceData();