diff --git a/src/drivers/camera_trigger/interfaces/src/gpio.h b/src/drivers/camera_trigger/interfaces/src/gpio.h
index 6582316c03..394e3169ce 100644
--- a/src/drivers/camera_trigger/interfaces/src/gpio.h
+++ b/src/drivers/camera_trigger/interfaces/src/gpio.h
@@ -39,7 +39,7 @@ private:
 		GPIO_GPIO5_OUTPUT
 	};
 
-	uint32_t _triggers[arraySize(_gpios) + 1];
+	uint32_t _triggers[arraySize(_gpios)];
 };
 
 #endif /* ifdef __PX4_NUTTX */