diff --git a/APMrover2/Log.pde b/APMrover2/Log.pde
index 5c0ff632a7..939f92bd51 100644
--- a/APMrover2/Log.pde
+++ b/APMrover2/Log.pde
@@ -555,8 +555,6 @@ 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_mode,
                              cliSerial);
 }
@@ -564,7 +562,7 @@ static void Log_Read(uint16_t log_num, uint16_t start_page, uint16_t end_page)
 // start a new log
 static void start_logging() 
 {
-    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/APMrover2/system.pde b/APMrover2/system.pde
index f917526fd4..83d824da6f 100644
--- a/APMrover2/system.pde
+++ b/APMrover2/system.pde
@@ -140,7 +140,7 @@ static void init_ardupilot()
 	mavlink_system.sysid = g.sysid_this_mav;
 
 #if LOGGING_ENABLED == ENABLED
-	DataFlash.Init(); 	// DataFlash log initialization
+	DataFlash.Init(log_structure, sizeof(log_structure)/sizeof(log_structure[0]));
     if (!DataFlash.CardInserted()) {
         gcs_send_text_P(SEVERITY_LOW, PSTR("No dataflash card inserted"));
         g.log_bitmask.set(0);