diff --git a/src/develop/imageop.c b/src/develop/imageop.c
index 21c0ca05d357..d2005a675b87 100644
--- a/src/develop/imageop.c
+++ b/src/develop/imageop.c
@@ -77,6 +77,7 @@ void dt_iop_load_default_params(dt_iop_module_t *module)
   dt_develop_blend_init_blend_parameters(module->default_blendop_params, cst);
   dt_iop_commit_blend_params(module, module->default_blendop_params);
   dt_iop_gui_blending_reload_defaults(module);
+  dt_iop_compute_blendop_hash(module);
   dt_iop_compute_module_hash(module);
 }