diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 7cda019..15404da 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -2330,6 +2330,8 @@
       free(mt->mcs_buf);
       mt->mcs_buf = NULL;
    }
+
+   mt->disable_aux_buffers = true;
 }