diff --git a/apps/opencs/view/world/physicssystem.cpp b/apps/opencs/view/world/physicssystem.cpp
index 891b175d5..7dce611c4 100644
--- a/apps/opencs/view/world/physicssystem.cpp
+++ b/apps/opencs/view/world/physicssystem.cpp
@@ -181,7 +181,7 @@ namespace CSVWorld
     }
 
     void PhysicsSystem::addHeightField(Ogre::SceneManager *sceneManager,
-            float* heights, int x, int y, float yoffset, float triSize, float sqrtVerts)
+            const float* heights, int x, int y, float yoffset, float triSize, float sqrtVerts)
     {
         std::string name = "HeightField_"
             + QString::number(x).toStdString() + "_" + QString::number(y).toStdString();
diff --git a/apps/opencs/view/world/physicssystem.hpp b/apps/opencs/view/world/physicssystem.hpp
index 0036bf769..17661caa8 100644
--- a/apps/opencs/view/world/physicssystem.hpp
+++ b/apps/opencs/view/world/physicssystem.hpp
@@ -63,7 +63,7 @@ namespace CSVWorld
             void moveSceneNodes(const std::string sceneNodeName, const Ogre::Vector3 &position);
 
             void addHeightField(Ogre::SceneManager *sceneManager,
-                    float* heights, int x, int y, float yoffset, float triSize, float sqrtVerts);
+                    const float* heights, int x, int y, float yoffset, float triSize, float sqrtVerts);
 
             void removeHeightField(Ogre::SceneManager *sceneManager, int x, int y);
 
diff --git a/apps/openmw/mwworld/physicssystem.cpp b/apps/openmw/mwworld/physicssystem.cpp
index bec4c6db3..50212afea 100644
--- a/apps/openmw/mwworld/physicssystem.cpp
+++ b/apps/openmw/mwworld/physicssystem.cpp
@@ -660,7 +660,7 @@ namespace MWWorld
         return MovementSolver::traceDown(ptr, mEngine, maxHeight);
     }
 
-    void PhysicsSystem::addHeightField (float* heights,
+    void PhysicsSystem::addHeightField (const float* heights,
                 int x, int y, float yoffset,
                 float triSize, float sqrtVerts)
     {
diff --git a/apps/openmw/mwworld/physicssystem.hpp b/apps/openmw/mwworld/physicssystem.hpp
index c1046aacb..21d712109 100644
--- a/apps/openmw/mwworld/physicssystem.hpp
+++ b/apps/openmw/mwworld/physicssystem.hpp
@@ -42,7 +42,7 @@ namespace MWWorld
 
             void addActor (const MWWorld::Ptr& ptr, const std::string& mesh);
 
-            void addHeightField (float* heights,
+            void addHeightField (const float* heights,
                 int x, int y, float yoffset,
                 float triSize, float sqrtVerts);
 
diff --git a/libs/openengine/bullet/physic.cpp b/libs/openengine/bullet/physic.cpp
index 15be7665a..44a928121 100644
--- a/libs/openengine/bullet/physic.cpp
+++ b/libs/openengine/bullet/physic.cpp
@@ -363,7 +363,7 @@ namespace Physic
         //delete BulletShapeManager::getSingletonPtr();
     }
 
-    void PhysicEngine::addHeightField(float* heights,
+    void PhysicEngine::addHeightField(const float* heights,
         int x, int y, float yoffset,
         float triSize, float sqrtVerts)
     {
diff --git a/libs/openengine/bullet/physic.hpp b/libs/openengine/bullet/physic.hpp
index 7784e8941..2c7ac8f05 100644
--- a/libs/openengine/bullet/physic.hpp
+++ b/libs/openengine/bullet/physic.hpp
@@ -227,7 +227,7 @@ namespace Physic
         /**
          * Add a HeightField to the simulation
          */
-        void addHeightField(float* heights,
+        void addHeightField(const float* heights,
                 int x, int y, float yoffset,
                 float triSize, float sqrtVerts);