diff --git a/src/osgText/shaders/text_vert.cpp b/src/osgText/shaders/text_vert.cpp
index 72506284f..7791e06ad 100644
--- a/src/osgText/shaders/text_vert.cpp
+++ b/src/osgText/shaders/text_vert.cpp
@@ -9,5 +9,9 @@ char text_vert[] = "$OSG_GLSL_VERSION\n"
                    "    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
                    "    texCoord = gl_MultiTexCoord0.xy;\n"
                    "    vertexColor = gl_Color;\n"
+                   "\n"
+                   "#ifndef GL_ES\n"
+                   "    gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex;\n"
+                   "#endif\n"
                    "}\n"
                    "\n";