diff --git a/speeduino/board_avr2560.h b/speeduino/board_avr2560.h
index c54f916b..936341b3 100644
--- a/speeduino/board_avr2560.h
+++ b/speeduino/board_avr2560.h
@@ -10,6 +10,7 @@
 * General
 */
   #define PORT_TYPE uint8_t //Size of the port variables (Eg inj1_pin_port).
+  #define PINMAKS_TYPE uint8_t
   void initBoard();
   uint16_t freeRam();
 
diff --git a/speeduino/board_stm32.h b/speeduino/board_stm32.h
index 8e062025..4ac36a28 100644
--- a/speeduino/board_stm32.h
+++ b/speeduino/board_stm32.h
@@ -6,7 +6,8 @@
 ***********************************************************************************************************
 * General
 */
-  #define PORT_TYPE uint8_t
+  #define PORT_TYPE uint32_t
+  #define PINMAKS_TYPE uint32_t
   #define micros_safe() micros() //timer5 method is not used on anything but AVR, the micros_safe() macro is simply an alias for the normal micros()
   #define USE_SERIAL3
   void initBoard();
diff --git a/speeduino/board_teensy35.h b/speeduino/board_teensy35.h
index 280aa69e..f5e26a27 100644
--- a/speeduino/board_teensy35.h
+++ b/speeduino/board_teensy35.h
@@ -9,6 +9,7 @@
   void initBoard();
   uint16_t freeRam();
   #define PORT_TYPE uint8_t //Size of the port variables
+  #define PINMAKS_TYPE uint8_t
   #define BOARD_DIGITAL_GPIO_PINS 34
   #define BOARD_NR_GPIO_PINS 34
   #define USE_SERIAL3
diff --git a/speeduino/board_template.h b/speeduino/board_template.h
index 7c9374e6..dbe057be 100644
--- a/speeduino/board_template.h
+++ b/speeduino/board_template.h
@@ -7,6 +7,7 @@
 * General
 */
   #define PORT_TYPE uint32_t //Size of the port variables (Eg inj1_pin_port). Most systems use a byte, but SAMD21 and possibly others are a 32-bit unsigned int
+  #define PINMAKS_TYPE uint32_t
   #define BOARD_NR_GPIO_PINS  52 //Not sure this is correct
   #define BOARD_DIGITAL_GPIO_PINS 52 //Pretty sure this isn't right
   #define micros_safe() micros() //timer5 method is not used on anything but AVR, the micros_safe() macro is simply an alias for the normal micros()