diff --git a/common/firmware/gpio.h b/common/firmware/gpio.h
index f721ad33c..e9bdab41e 100644
--- a/common/firmware/gpio.h
+++ b/common/firmware/gpio.h
@@ -13,8 +13,6 @@ void gpio_reset(void* port, uint16_t pin, uint8_t active_setting);
 
 bool gpio_is_set(void* port, uint16_t pin, uint8_t active_setting);
 
-uint8_t gpio_read(void* port, uint16_t pin);
-
 #ifdef __cplusplus
 }  // extern "C"
 #endif  // __cplusplus