diff --git a/ArduCopter/Log.cpp b/ArduCopter/Log.cpp
index 06920824c3..7e9630dd7d 100644
--- a/ArduCopter/Log.cpp
+++ b/ArduCopter/Log.cpp
@@ -403,21 +403,6 @@ void Copter::Log_Write_MotBatt()
 #endif
 }
 
-struct PACKED log_Startup {
-    LOG_PACKET_HEADER;
-    uint64_t time_us;
-};
-
-// Write Startup packet
-void Copter::Log_Write_Startup()
-{
-    struct log_Startup pkt = {
-        LOG_PACKET_HEADER_INIT(LOG_STARTUP_MSG),
-        time_us         : AP_HAL::micros64()
-    };
-    DataFlash.WriteBlock(&pkt, sizeof(pkt));
-}
-
 struct PACKED log_Event {
     LOG_PACKET_HEADER;
     uint64_t time_us;
@@ -736,8 +721,6 @@ const struct LogStructure Copter::log_structure[] = {
       "PM",  "QHHIhBHI",    "TimeUS,NLon,NLoop,MaxT,PMT,I2CErr,INSErr,LogDrop" },
     { LOG_MOTBATT_MSG, sizeof(log_MotBatt),
       "MOTB", "Qffff",  "TimeUS,LiftMax,BatVolt,BatRes,ThLimit" },
-    { LOG_STARTUP_MSG, sizeof(log_Startup),         
-      "STRT", "Q",            "TimeUS" },
     { LOG_EVENT_MSG, sizeof(log_Event),         
       "EV",   "QB",           "TimeUS,Id" },
     { LOG_DATA_INT16_MSG, sizeof(log_Data_Int16t),         
diff --git a/ArduCopter/defines.h b/ArduCopter/defines.h
index e498f7a9be..3e46882d80 100644
--- a/ArduCopter/defines.h
+++ b/ArduCopter/defines.h
@@ -260,7 +260,6 @@ enum ThrowModeState {
 #define LOG_CONTROL_TUNING_MSG          0x04
 #define LOG_NAV_TUNING_MSG              0x05
 #define LOG_PERFORMANCE_MSG             0x06
-#define LOG_STARTUP_MSG                 0x0A
 #define LOG_OPTFLOW_MSG                 0x0C
 #define LOG_EVENT_MSG                   0x0D
 #define LOG_PID_MSG                     0x0E    // deprecated