diff --git a/libraries/DataFlash/DataFlash_File.cpp b/libraries/DataFlash/DataFlash_File.cpp
index a8360a9192..90a981ed72 100644
--- a/libraries/DataFlash/DataFlash_File.cpp
+++ b/libraries/DataFlash/DataFlash_File.cpp
@@ -1005,7 +1005,7 @@ void DataFlash_File::ListAvailableLogs(AP_HAL::BetterStream *port)
         }
     }
 #endif
-    port->println();    
+    port->printf("\n");
 }
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_SITL || CONFIG_HAL_BOARD == HAL_BOARD_LINUX
diff --git a/libraries/DataFlash/LogFile.cpp b/libraries/DataFlash/LogFile.cpp
index 39c196e1f5..428d6d4daa 100644
--- a/libraries/DataFlash/LogFile.cpp
+++ b/libraries/DataFlash/LogFile.cpp
@@ -119,14 +119,14 @@ uint16_t DataFlash_Block::start_new_log(void)
     uint16_t last_page = find_last_page();
 
     StartRead(last_page);
-    //Serial.print("last page: "); Serial.println(last_page);
-    //Serial.print("file #: ");    Serial.println(GetFileNumber());
-    //Serial.print("file page: "); Serial.println(GetFilePage());
+    //Serial.printf("last page: "); Serial.printf("%u\n", last_page);
+    //Serial.printf("file #: ");    Serial.printf("%u\n", GetFileNumber());
+    //Serial.printf("file page: "); Serial.printf("%u\n", GetFilePage());
 
     if(find_last_log() == 0 || GetFileNumber() == 0xFFFF) {
         SetFileNumber(1);
         StartWrite(1);
-        //Serial.println("start log from 0");
+        //Serial.printf("start log from 0\n");
         log_write_started = true;
         return 1;
     }
@@ -497,7 +497,7 @@ void DataFlash_Backend::_print_log_entry(uint8_t msg_type,
             port->printf(", ");
         }
     }
-    port->println();
+    port->printf("\n");
 }
 
 /*
@@ -594,7 +594,7 @@ void DataFlash_Block::DumpPageInfo(AP_HAL::BetterStream *port)
 void DataFlash_Block::ShowDeviceInfo(AP_HAL::BetterStream *port)
 {
     if (!CardInserted()) {
-        port->println("No dataflash inserted");
+        port->printf("No dataflash inserted\n");
         return;
     }
     ReadManufacturerID();
@@ -635,7 +635,7 @@ void DataFlash_Block::ListAvailableLogs(AP_HAL::BetterStream *port)
             break;
         }
     }
-    port->println();
+    port->printf("\n");
 }
 
 // This function starts a new log file in the DataFlash, and writes
diff --git a/libraries/DataFlash/examples/DataFlash_AllTypes/DataFlash_AllTypes.cpp b/libraries/DataFlash/examples/DataFlash_AllTypes/DataFlash_AllTypes.cpp
index 60bab9ffd5..a5ad38b333 100644
--- a/libraries/DataFlash/examples/DataFlash_AllTypes/DataFlash_AllTypes.cpp
+++ b/libraries/DataFlash/examples/DataFlash_AllTypes/DataFlash_AllTypes.cpp
@@ -181,7 +181,7 @@ void DataFlashTest_AllTypes::Log_Write_TypeMessages_Log_Write()
 
 void DataFlashTest_AllTypes::setup(void)
 {
-    hal.console->println("Dataflash All Types 1.0");
+    hal.console->printf("Dataflash All Types 1.0\n");
 
     dataflash.Init(log_structure, ARRAY_SIZE(log_structure));
 
@@ -190,7 +190,7 @@ void DataFlashTest_AllTypes::setup(void)
     dataflash.ShowDeviceInfo(hal.console);
 
     if (dataflash.NeedPrep()) {
-        hal.console->println("Preparing dataflash...");
+        hal.console->printf("Preparing dataflash...\n");
         dataflash.Prep();
     }
 
diff --git a/libraries/DataFlash/examples/DataFlash_test/DataFlash_test.cpp b/libraries/DataFlash/examples/DataFlash_test/DataFlash_test.cpp
index 72bea5400d..fd0331e8de 100644
--- a/libraries/DataFlash/examples/DataFlash_test/DataFlash_test.cpp
+++ b/libraries/DataFlash/examples/DataFlash_test/DataFlash_test.cpp
@@ -43,14 +43,14 @@ void DataFlashTest::setup(void)
 {
     dataflash.Init(log_structure, ARRAY_SIZE(log_structure));
 
-    hal.console->println("Dataflash Log Test 1.0");
+    hal.console->printf("Dataflash Log Test 1.0\n");
 
     // Test
     hal.scheduler->delay(20);
     dataflash.ShowDeviceInfo(hal.console);
 
     if (dataflash.NeedPrep()) {
-        hal.console->println("Preparing dataflash...");
+        hal.console->printf("Preparing dataflash...\n");
         dataflash.Prep();
     }
 
@@ -59,9 +59,9 @@ void DataFlashTest::setup(void)
     dataflash.StartNewLog();
     log_num = dataflash.find_last_log();
     hal.console->printf("Using log number %u\n", log_num);
-    hal.console->println("After testing perform erase before using DataFlash for logging!");
-    hal.console->println("");
-    hal.console->println("Writing to flash... wait...");
+    hal.console->printf("After testing perform erase before using DataFlash for logging!\n");
+    hal.console->printf("\n");
+    hal.console->printf("Writing to flash... wait...\n");
 
     uint32_t total_micros = 0;
     uint16_t i;