diff --git a/components/detournavigator/recastmeshbuilder.cpp b/components/detournavigator/recastmeshbuilder.cpp
index 59f60394d2..ee014b9328 100644
--- a/components/detournavigator/recastmeshbuilder.cpp
+++ b/components/detournavigator/recastmeshbuilder.cpp
@@ -17,6 +17,7 @@
 #include <LinearMath/btAabbUtil2.h>
 
 #include <algorithm>
+#include <cassert>
 #include <tuple>
 
 namespace DetourNavigator
diff --git a/components/detournavigator/recastmeshmanager.hpp b/components/detournavigator/recastmeshmanager.hpp
index 3e9b2b1c35..5b568e004c 100644
--- a/components/detournavigator/recastmeshmanager.hpp
+++ b/components/detournavigator/recastmeshmanager.hpp
@@ -9,9 +9,10 @@
 
 #include <osg/Vec2i>
 
+#include <list>
 #include <map>
+#include <optional>
 #include <unordered_map>
-#include <list>
 
 class btCollisionShape;