diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c
index 826fb73..590f357 100644
--- a/src/mesa/shader/program.c
+++ b/src/mesa/shader/program.c
@@ -300,6 +300,13 @@
       _mesa_free_parameter_list(prog->Parameters);
    }
 
+   /* XXX this is a little ugly */
+   if (prog->Target == GL_VERTEX_PROGRAM_ARB) {
+      struct gl_vertex_program *vprog = (struct gl_vertex_program *) prog;
+      if (vprog->TnlData)
+         _mesa_free(vprog->TnlData);
+   }
+
    _mesa_free(prog);
 }