diff --git a/apps/openmw/mwworld/physicssystem.cpp b/apps/openmw/mwworld/physicssystem.cpp
index b309bd1db..c4120f8ff 100644
--- a/apps/openmw/mwworld/physicssystem.cpp
+++ b/apps/openmw/mwworld/physicssystem.cpp
@@ -333,13 +333,13 @@ namespace MWWorld
         return result;
     }
 
-    bool PhysicsSystem::castRay(const Vector3& from, const Vector3& to, bool raycastingObjectOnly)
+    bool PhysicsSystem::castRay(const Vector3& from, const Vector3& to, bool raycastingObjectOnly,bool ignoreHeightMap)
     {
         btVector3 _from, _to;
         _from = btVector3(from.x, from.y, from.z);
         _to = btVector3(to.x, to.y, to.z);
 
-        std::pair<std::string, float> result = mEngine->rayTest(_from, _to, raycastingObjectOnly);
+        std::pair<std::string, float> result = mEngine->rayTest(_from, _to, raycastingObjectOnly,ignoreHeightMap);
         return !(result.first == "");
     }
 
diff --git a/apps/openmw/mwworld/physicssystem.hpp b/apps/openmw/mwworld/physicssystem.hpp
index ad8eb2eba..7b48f880e 100644
--- a/apps/openmw/mwworld/physicssystem.hpp
+++ b/apps/openmw/mwworld/physicssystem.hpp
@@ -63,7 +63,7 @@ namespace MWWorld
 
 
             // cast ray, return true if it hit something. if raycasringObjectOnlt is set to false, it ignores NPCs and objects with no collisions.
-            bool castRay(const Ogre::Vector3& from, const Ogre::Vector3& to, bool raycastingObjectOnly = true);
+            bool castRay(const Ogre::Vector3& from, const Ogre::Vector3& to, bool raycastingObjectOnly = true,bool ignoreHeightMap = false);
 
             std::pair<bool, Ogre::Vector3>
             castRay(const Ogre::Vector3 &orig, const Ogre::Vector3 &dir, float len);
diff --git a/apps/openmw/mwworld/worldimp.cpp b/apps/openmw/mwworld/worldimp.cpp
index a40889515..facc4925d 100644
--- a/apps/openmw/mwworld/worldimp.cpp
+++ b/apps/openmw/mwworld/worldimp.cpp
@@ -1046,7 +1046,7 @@ namespace MWWorld
     {
         Ogre::Vector3 a(x1,y1,z1);std::cout << x1 << " " << x2;
         Ogre::Vector3 b(x2,y2,z2);
-        return mPhysics->castRay(a,b,false);
+        return mPhysics->castRay(a,b,false,true);
     }
 
     void World::processDoors(float duration)
diff --git a/libs/openengine/bullet/physic.cpp b/libs/openengine/bullet/physic.cpp
index 74a204cd7..9537deb28 100644
--- a/libs/openengine/bullet/physic.cpp
+++ b/libs/openengine/bullet/physic.cpp
@@ -605,7 +605,7 @@ namespace Physic
     {
     }
 
-    std::pair<std::string,float> PhysicEngine::rayTest(btVector3& from,btVector3& to,bool raycastingObjectOnly)
+    std::pair<std::string,float> PhysicEngine::rayTest(btVector3& from,btVector3& to,bool raycastingObjectOnly,bool ignoreHeightMap)
     {
         std::string name = "";
         float d = -1;
@@ -614,6 +614,8 @@ namespace Physic
         btCollisionWorld::ClosestRayResultCallback resultCallback1(from, to);
         if(raycastingObjectOnly) resultCallback1.m_collisionFilterMask = CollisionType_Raycasting;
         else resultCallback1.m_collisionFilterMask = CollisionType_World;
+
+        if(!ignoreHeightMap) resultCallback1.m_collisionFilterMask = resultCallback1.m_collisionFilterMask|| CollisionType_HeightMap;
         dynamicsWorld->rayTest(from, to, resultCallback1);
         if (resultCallback1.hasHit())
         {
diff --git a/libs/openengine/bullet/physic.hpp b/libs/openengine/bullet/physic.hpp
index 03c8493f0..fbd9507fb 100644
--- a/libs/openengine/bullet/physic.hpp
+++ b/libs/openengine/bullet/physic.hpp
@@ -293,7 +293,7 @@ namespace Physic
         /**
          * Return the closest object hit by a ray. If there are no objects, it will return ("",-1).
          */
-        std::pair<std::string,float> rayTest(btVector3& from,btVector3& to,bool raycastingObjectOnly = true);
+        std::pair<std::string,float> rayTest(btVector3& from,btVector3& to,bool raycastingObjectOnly = true,bool ignoreHeightMap = false);
 
         /**
          * Return all objects hit by a ray.