diff --git a/src/gallium/drivers/panfrost/pan_csf.c b/src/gallium/drivers/panfrost/pan_csf.c
index 632dfe1db7e..c941658517d 100644
--- a/src/gallium/drivers/panfrost/pan_csf.c
+++ b/src/gallium/drivers/panfrost/pan_csf.c
@@ -187,7 +187,7 @@ csf_oom_handler_init(struct panfrost_context *ctx)
    assert(cs_is_valid(&b));
    cs_finish(&b);
    ctx->csf.tiler_oom_handler.cs_bo = cs_bo;
-   ctx->csf.tiler_oom_handler.length = b.root_chunk.size * 8;
+   ctx->csf.tiler_oom_handler.length = handler.length * sizeof(uint64_t);
    ctx->csf.tiler_oom_handler.save_bo = reg_save_bo;
 }