diff --git a/hal/include/HAL/DIO.h b/hal/include/HAL/DIO.h
index 99de9a8ff6..7f30d9b06e 100644
--- a/hal/include/HAL/DIO.h
+++ b/hal/include/HAL/DIO.h
@@ -15,7 +15,7 @@
 extern "C" {
 #endif
 HAL_DigitalHandle HAL_InitializeDIOPort(HAL_PortHandle port_handle,
-                                        int32_t input, int32_t* status);
+                                        HAL_Bool input, int32_t* status);
 void HAL_FreeDIOPort(HAL_DigitalHandle dio_port_handle);
 
 HAL_DigitalPWMHandle HAL_AllocateDigitalPWM(int32_t* status);
diff --git a/hal/lib/athena/DIO.cpp b/hal/lib/athena/DIO.cpp
index bf62b7e18d..22fa9cd996 100644
--- a/hal/lib/athena/DIO.cpp
+++ b/hal/lib/athena/DIO.cpp
@@ -29,7 +29,7 @@ extern "C" {
  * Create a new instance of a digital port.
  */
 HAL_DigitalHandle HAL_InitializeDIOPort(HAL_PortHandle port_handle,
-                                        int32_t input, int32_t* status) {
+                                        HAL_Bool input, int32_t* status) {
   initializeDigital(status);
 
   if (*status != 0) return HAL_kInvalidHandle;