diff --git a/src/gpio.h b/src/gpio.h
index dbe3e33..3bc669e 100644
--- a/src/gpio.h
+++ b/src/gpio.h
@@ -21,7 +21,6 @@ struct gpio {
 #define GPIO_PORT_OFFSET (0x400U)
 #define GPIO(port) ((struct gpio*)(uintptr_t)(GPIO_BASE_ADDR + (GPIO_PORT_OFFSET * port)))
 
-#define BIT(x) (1 << x)
 // Create a 16bit number from a port and pin
 #define PIN(port, num) ((((port) - 'A') << 8) | num)
 // get the lower byte from a PIN
diff --git a/src/main.c b/src/main.c
index 2479373..8c0edc1 100644
--- a/src/main.c
+++ b/src/main.c
@@ -79,7 +79,7 @@ int main(void) {
   (void) tim4_start();
 
   uint16_t led = PIN('C', 13);           // Blue LED
-  RCC->AHB1ENR |= BIT(PINPORT(led));     // Enable GPIO clock for LED
+  RCC->AHB1ENR |= (1 << PINPORT(led));   // Enable GPIO clock for LED
   gpio_set_mode(led, GPIO_MODE_OUTPUT);  // Set blue LED to output mode
 
   uint16_t counter = TIM4->CNT;