diff --git a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
index 47a265ace4..e3e43dd503 100644
--- a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
@@ -149,7 +149,7 @@ bool TINYNVM_ReadMemory(const uint16_t ReadAddress, uint8_t* ReadBuffer, uint16_
  *
  *  \return Boolean true if the command sequence complete successfully
  */
-bool TINYNVM_WriteMemory(const uint16_t WriteAddress, const uint8_t* WriteBuffer, uint16_t WriteLength)
+bool TINYNVM_WriteMemory(const uint16_t WriteAddress, uint8_t* WriteBuffer, uint16_t WriteLength)
 {
 	/* Wait until the NVM controller is no longer busy */
 	if (!(TINYNVM_WaitWhileNVMControllerBusy()))
diff --git a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.h b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.h
index 5a18567cba..c314ded46c 100644
--- a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.h
+++ b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.h
@@ -64,7 +64,7 @@
 	/* Function Prototypes: */		
 		bool TINYNVM_WaitWhileNVMBusBusy(void);
 		bool TINYNVM_ReadMemory(const uint16_t ReadAddress, uint8_t* ReadBuffer, uint16_t ReadLength);
-		bool TINYNVM_WriteMemory(const uint16_t WriteAddress, const uint8_t* WriteBuffer, uint16_t WriteLength);
+		bool TINYNVM_WriteMemory(const uint16_t WriteAddress, uint8_t* WriteBuffer, uint16_t WriteLength);
 		bool TINYNVM_EraseMemory(void);
 
 		#if defined(INCLUDE_FROM_TINYNVM_C)