diff --git a/apps/openmw/mwrender/sky.cpp b/apps/openmw/mwrender/sky.cpp
index 692e3655a..513fc74a3 100644
--- a/apps/openmw/mwrender/sky.cpp
+++ b/apps/openmw/mwrender/sky.cpp
@@ -17,6 +17,7 @@
 #include <osg/MatrixTransform>
 #include <osg/BlendFunc>
 #include <osg/AlphaFunc>
+#include <osg/observer_ptr>
 
 #include <osgParticle/ParticleSystem>
 #include <osgParticle/ParticleSystemUpdater>
diff --git a/apps/openmw/mwworld/projectilemanager.hpp b/apps/openmw/mwworld/projectilemanager.hpp
index 02ac6cb55..74d4c1dc5 100644
--- a/apps/openmw/mwworld/projectilemanager.hpp
+++ b/apps/openmw/mwworld/projectilemanager.hpp
@@ -3,7 +3,6 @@
 
 #include <string>
 
-#include <osg/observer_ptr>
 #include <osg/ref_ptr>
 #include <osg/PositionAttitudeTransform>
 
diff --git a/components/sceneutil/lightcontroller.cpp b/components/sceneutil/lightcontroller.cpp
index 47575e2e6..e3ea93843 100644
--- a/components/sceneutil/lightcontroller.cpp
+++ b/components/sceneutil/lightcontroller.cpp
@@ -2,7 +2,6 @@
 
 #include <cmath>
 
-#include <osg/observer_ptr>
 #include <osg/NodeVisitor>
 
 #include <components/sceneutil/lightmanager.hpp>
diff --git a/components/sceneutil/lightmanager.hpp b/components/sceneutil/lightmanager.hpp
index 07b3b4a62..0d8610ead 100644
--- a/components/sceneutil/lightmanager.hpp
+++ b/components/sceneutil/lightmanager.hpp
@@ -5,6 +5,7 @@
 
 #include <osg/Group>
 #include <osg/NodeVisitor>
+#include <osg/observer_ptr>
 
 namespace SceneUtil
 {
diff --git a/components/sceneutil/lightutil.cpp b/components/sceneutil/lightutil.cpp
index 979d41181..6499c54b1 100644
--- a/components/sceneutil/lightutil.cpp
+++ b/components/sceneutil/lightutil.cpp
@@ -1,6 +1,5 @@
 #include "lightutil.hpp"
 
-#include <osg/observer_ptr>
 #include <osg/Light>
 #include <osg/Group>
 #include <osg/ComputeBoundsVisitor>