diff --git a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
index d2acba964..49ba21e0c 100644
--- a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
@@ -269,10 +269,8 @@ static int gr_gp10b_calc_global_ctx_buffer_size(struct gk20a *g)
 	struct gr_gk20a *gr = &g->gr;
 	int size;
 
-	gr->attrib_cb_size = gr->attrib_cb_default_size
-		+ (gr->attrib_cb_default_size >> 1);
-	gr->alpha_cb_size = gr->alpha_cb_default_size
-		+ (gr->alpha_cb_default_size >> 1);
+	gr->attrib_cb_size = gr->attrib_cb_default_size;
+	gr->alpha_cb_size = gr->alpha_cb_default_size;
 
 	gr->attrib_cb_size = min(gr->attrib_cb_size,
 		 gr_gpc0_ppc0_cbm_beta_cb_size_v_f(~0) / g->gr.tpc_count);