diff --git a/hardware/arduino/sam/libraries/SPI/SPI.cpp b/hardware/arduino/sam/libraries/SPI/SPI.cpp
index bd7a6433a..d27d13fcc 100644
--- a/hardware/arduino/sam/libraries/SPI/SPI.cpp
+++ b/hardware/arduino/sam/libraries/SPI/SPI.cpp
@@ -56,7 +56,7 @@ void SPIClass::detachInterrupt(void) {
 }
 
 #if SPI_INTERFACES_COUNT > 0
-static void SPI0_Init(void) {
+static void SPI_0_Init(void) {
 	PIO_Configure(g_APinDescription[PIN_SPI_MOSI].pPort,
 			g_APinDescription[PIN_SPI_MOSI].ulPinType,
 			g_APinDescription[PIN_SPI_MOSI].ulPin,
@@ -71,5 +71,5 @@ static void SPI0_Init(void) {
 			g_APinDescription[PIN_SPI_SCK].ulPinConfiguration);
 }
 
-SPIClass SPI0(SPI_INTERFACE, SPI_INTERFACE_ID, SPI0_Init);
+SPIClass SPI_0(SPI_INTERFACE, SPI_INTERFACE_ID, SPI_0_Init);
 #endif
diff --git a/hardware/arduino/sam/libraries/SPI/SPI.h b/hardware/arduino/sam/libraries/SPI/SPI.h
index ceeaa3f52..b183c886c 100644
--- a/hardware/arduino/sam/libraries/SPI/SPI.h
+++ b/hardware/arduino/sam/libraries/SPI/SPI.h
@@ -57,7 +57,7 @@ class SPIClass {
 };
 
 #if SPI_INTERFACES_COUNT > 0
-extern SPIClass SPI0;
+extern SPIClass SPI_0;
 #endif
 
 #endif
diff --git a/hardware/arduino/sam/variants/arduino_due_x/variant.h b/hardware/arduino/sam/variants/arduino_due_x/variant.h
index 3408849c7..5ab9d963c 100644
--- a/hardware/arduino/sam/variants/arduino_due_x/variant.h
+++ b/hardware/arduino/sam/variants/arduino_due_x/variant.h
@@ -80,8 +80,8 @@
  */
 #define SPI_INTERFACES_COUNT 1
 
-#define SPI_INTERFACE        SPI
-#define SPI_INTERFACE_ID     ID_SPI
+#define SPI_INTERFACE        SPI0
+#define SPI_INTERFACE_ID     ID_SPI0
 #define PIN_SPI_SS           (77u)
 #define PIN_SPI_MOSI         (75u)
 #define PIN_SPI_MISO         (74u)