diff --git a/examples/osgtransformfeedback/osgtransformfeedback.cpp b/examples/osgtransformfeedback/osgtransformfeedback.cpp
index 45f15092c..15beab2a0 100644
--- a/examples/osgtransformfeedback/osgtransformfeedback.cpp
+++ b/examples/osgtransformfeedback/osgtransformfeedback.cpp
@@ -85,13 +85,9 @@ static const char* vertSource =
     "#version 120\n"
     "#extension GL_EXT_geometry_shader4 : enable\n"
     "uniform float u_anim1;\n"
-    //"in vec4 Vertex;\n"
     " varying out vec4 v_color;\n"
-    //"out vec4 v_vertex;\n"
     "void main(void)\n"
     "{\n"
-    //"    v_color = Vertex;\n"
-    //"   v_vertex = Vertex;;//gl_ModelViewProjectionMatrix * Vertex;\n"
     "   gl_Position = (gl_Vertex);\n"
     "	v_color = gl_Vertex;\n"
     "}\n"
@@ -103,11 +99,8 @@ static const char* geomSource =
 {
     "#version 120\n"
     "#extension GL_EXT_geometry_shader4 : enable\n"
-    //	"layout(points) in;\n"\
-    //	"layout(points, max_vertices = 4) out;\n"
     "uniform float u_anim1;\n"
     " varying in vec4 v_color[];\n"
-    //" varying in vec4 v_vertex[];\n"
     " varying  vec4 out1;\n"
     "void main(void)\n"
     "{\n"