diff --git a/src/osgTerrain/GeometryPool.cpp b/src/osgTerrain/GeometryPool.cpp
index b4755df0e..f10cca622 100644
--- a/src/osgTerrain/GeometryPool.cpp
+++ b/src/osgTerrain/GeometryPool.cpp
@@ -559,10 +559,10 @@ osg::ref_ptr<osg::Program> GeometryPool::getOrCreateProgram(LayerTypes& layerTyp
 
     // OSG_NOTICE<<") creating new Program "<<program.get()<<std::endl;
 
-    osg::ref_ptr<osg::Shader> vertex_shader = osgDB::readShaderFile("shaders/terrain.vert");
+    osg::ref_ptr<osg::Shader> vertex_shader = osgDB::readShaderFile("shaders/terrain_displacement_mapping.vert");
     program->addShader(vertex_shader.get());
 
-    osg::ref_ptr<osg::Shader> fragment_shader = osgDB::readShaderFile("shaders/terrain.frag");
+    osg::ref_ptr<osg::Shader> fragment_shader = osgDB::readShaderFile("shaders/terrain_displacement_mapping.frag");
     program->addShader(fragment_shader.get());
 
     return program;