diff --git a/src/mesa/drivers/dri/i965/brw_draw.c b/src/mesa/drivers/dri/i965/brw_draw.c
index d07349419cc..a3cfa765c0f 100644
--- a/src/mesa/drivers/dri/i965/brw_draw.c
+++ b/src/mesa/drivers/dri/i965/brw_draw.c
@@ -875,6 +875,16 @@ brw_finish_drawing(struct gl_context *ctx)
       brw_bo_unreference(brw->draw.draw_params_count_bo);
       brw->draw.draw_params_count_bo = NULL;
    }
+
+   if (brw->draw.draw_params_bo) {
+      brw_bo_unreference(brw->draw.draw_params_bo);
+      brw->draw.draw_params_bo = NULL;
+   }
+
+   if (brw->draw.derived_draw_params_bo) {
+      brw_bo_unreference(brw->draw.derived_draw_params_bo);
+      brw->draw.derived_draw_params_bo = NULL;
+   }
 }
 
 /**