diff --git a/ArduCopter/Log.pde b/ArduCopter/Log.pde
index 0d93d596ed..09507b1547 100644
--- a/ArduCopter/Log.pde
+++ b/ArduCopter/Log.pde
@@ -792,8 +792,6 @@ static void Log_Read(uint16_t log_num, uint16_t start_page, uint16_t end_page)
     cliSerial->println_P(PSTR(HAL_BOARD_NAME));
 
 	DataFlash.LogReadProcess(log_num, start_page, end_page, 
-                             sizeof(log_structure)/sizeof(log_structure[0]),
-                             log_structure, 
                              print_flight_mode,
                              cliSerial);
 }
@@ -803,7 +801,7 @@ static void start_logging()
 {
     if (g.log_bitmask != 0 && !ap.logging_started) {
         ap.logging_started = true;
-        DataFlash.StartNewLog(sizeof(log_structure)/sizeof(log_structure[0]), log_structure);
+        DataFlash.StartNewLog();
         DataFlash.Log_Write_Message_P(PSTR(FIRMWARE_STRING));
 
         // write system identifier as well if available
diff --git a/ArduCopter/system.pde b/ArduCopter/system.pde
index 0b5bd88345..ee83abe7ae 100644
--- a/ArduCopter/system.pde
+++ b/ArduCopter/system.pde
@@ -161,7 +161,7 @@ static void init_ardupilot()
     mavlink_system.type = 2; //MAV_QUADROTOR;
 
 #if LOGGING_ENABLED == ENABLED
-    DataFlash.Init();
+    DataFlash.Init(log_structure, sizeof(log_structure)/sizeof(log_structure[0]));
     if (!DataFlash.CardInserted()) {
         gcs_send_text_P(SEVERITY_LOW, PSTR("No dataflash inserted"));
         g.log_bitmask.set(0);