From 8e6fb7818b6de7271e047f0b89fed7bdef33b4c5 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Mon, 13 Feb 2023 18:39:12 +0100
Subject: [PATCH] fix: `isq_angle` compilation fixed

---
 .../isq_angle/include/mp_units/systems/isq_angle/isq_angle.h     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/systems/isq_angle/include/mp_units/systems/isq_angle/isq_angle.h b/src/systems/isq_angle/include/mp_units/systems/isq_angle/isq_angle.h
index 8f87063c..0f325c3f 100644
--- a/src/systems/isq_angle/include/mp_units/systems/isq_angle/isq_angle.h
+++ b/src/systems/isq_angle/include/mp_units/systems/isq_angle/isq_angle.h
@@ -23,6 +23,7 @@
 #pragma once
 
 #include <mp_units/quantity_spec.h>
+#include <mp_units/reference.h>
 #include <mp_units/systems/angular/angular.h>
 #include <mp_units/systems/isq/isq.h>