diff --git a/Bootloaders/DFU/BootloaderDFU.c b/Bootloaders/DFU/BootloaderDFU.c
index c14bd267766801e47cbece21f5f679ead66f205a..752c32009a5bfc1356ed87b251e7ab7adf4dd03d 100644
--- a/Bootloaders/DFU/BootloaderDFU.c
+++ b/Bootloaders/DFU/BootloaderDFU.c
@@ -635,7 +635,7 @@ static void ProcessWriteCommand(void)
 		WaitForExit = true;
 
 		/* Check if empty request data array - an empty request after a filled request retains the
-		   previous valid request data, but initialises the reset */
+		   previous valid request data, but initializes the reset */
 		if (!(SentCommand.DataSize))
 		{
 			if (SentCommand.Data[1] == 0x00)                                   // Start via watchdog
diff --git a/Demos/Device/LowLevel/RNDISEthernet/Lib/RNDIS.h b/Demos/Device/LowLevel/RNDISEthernet/Lib/RNDIS.h
index 285883bae29877f12f640256d3800fa9e2a99044..17a34ace7fc974b7811f375e9f6151777a5d792d 100644
--- a/Demos/Device/LowLevel/RNDISEthernet/Lib/RNDIS.h
+++ b/Demos/Device/LowLevel/RNDISEthernet/Lib/RNDIS.h
@@ -61,7 +61,7 @@
 		/** Enum for the possible NDIS adapter states. */
 		enum RNDIS_States_t
 		{
-			RNDIS_Uninitialized    = 0, /**< Adapter currently uninitialised */
+			RNDIS_Uninitialized    = 0, /**< Adapter currently uninitialized */
 			RNDIS_Initialized      = 1, /**< Adapter currently initialized but not ready for data transfers */
 			RNDIS_Data_Initialized = 2, /**< Adapter currently initialized and ready for data transfers */
 		};
diff --git a/Demos/Host/Incomplete/BluetoothHost/BluetoothEvents.c b/Demos/Host/Incomplete/BluetoothHost/BluetoothEvents.c
index 8e51279d36e157fb8aa805c04a3472f63aae06b0..543e1b879fff19fb27653ec6404468a5388d5ebd 100644
--- a/Demos/Host/Incomplete/BluetoothHost/BluetoothEvents.c
+++ b/Demos/Host/Incomplete/BluetoothHost/BluetoothEvents.c
@@ -56,7 +56,7 @@ void Bluetooth_StackInitialized(void)
 	         Bluetooth_State.LocalBDADDR[5], Bluetooth_State.LocalBDADDR[4], Bluetooth_State.LocalBDADDR[3],
 	         Bluetooth_State.LocalBDADDR[2], Bluetooth_State.LocalBDADDR[1], Bluetooth_State.LocalBDADDR[0]);
 			 
-	/* Reinitialise the services placed on top of the Bluetooth stack ready for new connections */
+	/* Reinitialize the services placed on top of the Bluetooth stack ready for new connections */
 	RFCOMM_Initialize();
 }
 
diff --git a/LUFA/Common/Common.h b/LUFA/Common/Common.h
index 4f28543851de9bbe82f4a39f800965305940f317..e939b66f3eade0f82373126953b02a8fe2ab3075 100644
--- a/LUFA/Common/Common.h
+++ b/LUFA/Common/Common.h
@@ -127,7 +127,7 @@
 
 			/** Swaps the byte ordering of a 16-bit value at compile time. Do not use this macro for swapping byte orderings
 			 *  of dynamic values computed at runtime, use \ref SwapEndian_16() instead. The result of this macro can be used
-			 *  inside struct or other variable initialisers outside of a function, something that is not possible with the
+			 *  inside struct or other variable initializers outside of a function, something that is not possible with the
 			 *  inline function variant.
 			 *
 			 *  \param[in]  x  16-bit value whose byte ordering is to be swapped.
@@ -138,7 +138,7 @@
 
 			/** Swaps the byte ordering of a 32-bit value at compile time. Do not use this macro for swapping byte orderings
 			 *  of dynamic values computed at runtime- use \ref SwapEndian_32() instead. The result of this macro can be used
-			 *  inside struct or other variable initialisers outside of a function, something that is not possible with the
+			 *  inside struct or other variable initializers outside of a function, something that is not possible with the
 			 *  inline function variant.
 			 *
 			 *  \param[in]  x  32-bit value whose byte ordering is to be swapped.
diff --git a/LUFA/Drivers/Peripheral/Serial.h b/LUFA/Drivers/Peripheral/Serial.h
index 23bbd6a4bb2d853d22656b5bada7dd7729716089..4eb74b9d2422608b6e1bbbc043ad50ef5151e7e1 100644
--- a/LUFA/Drivers/Peripheral/Serial.h
+++ b/LUFA/Drivers/Peripheral/Serial.h
@@ -90,7 +90,7 @@
 			void Serial_TxString(const char* StringPtr) ATTR_NON_NULL_PTR_ARG(1);
 
 		/* Inline Functions: */
-			/** Initialises the USART, ready for serial data transmission and reception. This initialises the interface to
+			/** Initializes the USART, ready for serial data transmission and reception. This initializes the interface to
 			 *  standard 8-bit, no parity, 1 stop bit settings suitable for most applications.
 			 *
 			 *  \param[in] BaudRate     Serial baud rate, in bits per second.
diff --git a/LUFA/Drivers/USB/Class/Common/RNDIS.h b/LUFA/Drivers/USB/Class/Common/RNDIS.h
index ab0126e24e1ec6fa7bf2ab14beb33f8cc30f3523..a6549c5e3d3e31ad825671cc366676da43a98efb 100644
--- a/LUFA/Drivers/USB/Class/Common/RNDIS.h
+++ b/LUFA/Drivers/USB/Class/Common/RNDIS.h
@@ -96,7 +96,7 @@
 		/** Enum for the possible NDIS adapter states. */
 		enum RNDIS_States_t
 		{
-			RNDIS_Uninitialized    = 0, /**< Adapter currently uninitialised. */
+			RNDIS_Uninitialized    = 0, /**< Adapter currently uninitialized. */
 			RNDIS_Initialized      = 1, /**< Adapter currently initialized but not ready for data transfers. */
 			RNDIS_Data_Initialized = 2, /**< Adapter currently initialized and ready for data transfers. */
 		};
diff --git a/LUFA/ManPages/ChangeLog.txt b/LUFA/ManPages/ChangeLog.txt
index d97dc3718c406560d6f904f809e7f04fe96b45a9..202cd2ce5e78e473c52599e70506eca6ecba6044 100644
--- a/LUFA/ManPages/ChangeLog.txt
+++ b/LUFA/ManPages/ChangeLog.txt
@@ -254,7 +254,7 @@
   *    devices from timing out the data pipes
   *  - Fixed the definition of the Endpoint_BytesInEndpoint() macro for the U4 series AVR parts
   *  - Fixed MIDI host Class driver MIDI_Host_SendEventPacket() routine not properly checking for Pipe ready before writing
-  *  - Fixed use of deprecated struct initialisers, removed library unused parameter warnings when compiled with -Wextra enabled
+  *  - Fixed use of deprecated struct initializers, removed library unused parameter warnings when compiled with -Wextra enabled
   *  - Fixed Still Image Host Class driver truncating the PIMA response code (thanks to Daniel Seibert)
   *  - Fixed USB_CurrentMode not being reset to USB_MODE_NONE when the USB interface is shut down and both Host and Device modes can be
   *    used (thanks to Daniel Levy)
@@ -540,7 +540,7 @@
   *    USB_INITERROR_NoUSBModeSpecified
   *  - Renamed USB_PowerOnFail event to USB_InitFailure
   *  - Renamed OTG.h header functions to be more consistent with the rest of the library API
-  *  - Changed over all deprecated GCC structure tag initialisers to the standardized C99 format (thanks to Mike Alexander)
+  *  - Changed over all deprecated GCC structure tag initializers to the standardized C99 format (thanks to Mike Alexander)
   *  - USB_HostRequest renamed to USB_ControlRequest, entire control request header is now read into USB_ControlRequest in Device mode
   *    rather than having the library pass only partially read header data to the application
   *  - The USB_UnhandledControlPacket event has had its parameters removed, in favor of accessing the new USB_ControlRequest structure
diff --git a/LUFA/ManPages/MigrationInformation.txt b/LUFA/ManPages/MigrationInformation.txt
index bc3cfe5d4b89f96de48eb8437f7842aca2676c2d..3a23df0589c9bdc0ea73634c01762f0c9a844567 100644
--- a/LUFA/ManPages/MigrationInformation.txt
+++ b/LUFA/ManPages/MigrationInformation.txt
@@ -122,7 +122,7 @@
  *    - The ADC_Off() function has been renamed to \ref ADC_ShutDown() to be consistent with the rest of the library.
  *    - The \ref SPI_Init() routine's parameters have changed, so that the clock polarity and data sampling modes can be set. See
  *      the \ref SPI_Init() function documentation for more details
- *    - The \ref Dataflash_Init() routine no longer initialises the SPI bus - the SPI bus should be initialized manually via a
+ *    - The \ref Dataflash_Init() routine no longer initializes the SPI bus - the SPI bus should be initialized manually via a
  *      call to SPI_Init() before using the Dataflash driver
  *
  *  <b>Host Mode</b>
diff --git a/Projects/TempDataLogger/Lib/FATFs/ff.c b/Projects/TempDataLogger/Lib/FATFs/ff.c
index 0aedb6bc4d7d11d415b52d8e380b76dea04e44a3..3da658e970ebde5432a9c1db6bc49b7315a62be7 100644
--- a/Projects/TempDataLogger/Lib/FATFs/ff.c
+++ b/Projects/TempDataLogger/Lib/FATFs/ff.c
@@ -1723,7 +1723,7 @@ FRESULT chk_mounted (	/* FR_OK(0): successful, !=0: any error occurred */
 	if (fmt == 3) return FR_DISK_ERR;
 	if (fmt) return FR_NO_FILESYSTEM;					/* No FAT volume is found */
 
-	/* Following code initialises the file system object */
+	/* Following code initializes the file system object */
 
 	if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs))		/* (BPB_BytsPerSec must be equal to the physical sector size) */
 		return FR_NO_FILESYSTEM;
diff --git a/Projects/Webserver/Lib/FATFs/ff.c b/Projects/Webserver/Lib/FATFs/ff.c
index e4d52346359362d773a90c173dd9ba7bdf6fcc26..31340df89f2979204a7fec85bdfb62aa17e87ba8 100644
--- a/Projects/Webserver/Lib/FATFs/ff.c
+++ b/Projects/Webserver/Lib/FATFs/ff.c
@@ -1723,7 +1723,7 @@ FRESULT chk_mounted (	/* FR_OK(0): successful, !=0: any error occurred */
 	if (fmt == 3) return FR_DISK_ERR;
 	if (fmt) return FR_NO_FILESYSTEM;					/* No FAT volume is found */
 
-	/* Following code initialises the file system object */
+	/* Following code initializes the file system object */
 
 	if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs))		/* (BPB_BytsPerSec must be equal to the physical sector size) */
 		return FR_NO_FILESYSTEM;
diff --git a/Projects/Webserver/Lib/uip/uip.h b/Projects/Webserver/Lib/uip/uip.h
index abc72208f4f44b3187f6060b480e5d46f9c8dd56..83a08a8a08eb8255f68a91ed9bf033826577ad6f 100644
--- a/Projects/Webserver/Lib/uip/uip.h
+++ b/Projects/Webserver/Lib/uip/uip.h
@@ -232,7 +232,7 @@ typedef struct uip_eth_addr uip_lladdr_t;
 /**
  * uIP initialization function.
  *
- * This function should be called at boot up to initialise the uIP
+ * This function should be called at boot up to initialize the uIP
  * TCP/IP stack.
  */
 void uip_init(void);