diff --git a/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp b/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp
index 7a5f983..1407564 100644
--- a/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp
+++ b/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp
@@ -161,7 +161,8 @@ lower_texture_grad_visitor::visit_leave(ir_texture *ir)
     * alternatively, remove one unit from the result of the log2 computation.
     */
    ir->op = ir_txl;
-   if (ir->sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_CUBE) {
+   if (ir->sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_CUBE &&
+       !ir->shadow_comparitor) {
       ir->lod_info.lod = expr(ir_binop_add,
                               expr(ir_unop_log2, rho),
                               new(mem_ctx) ir_constant(-1.0f));