diff --git a/tools/export_model.py b/tools/export_model.py
index 720599c921a2109c6644886c3c700274f39424a8..414b5794c686571ff6476db40618d5c15dadaa3c 100644
--- a/tools/export_model.py
+++ b/tools/export_model.py
@@ -45,7 +45,7 @@ from ppocr.utils.save_load import init_model
 
 
 def main():
-     startup_prog, eval_program, place, config = program.preProcess()
+    startup_prog, eval_program, place, config = program.preProcess()
 
     feeded_var_names, target_vars, fetches_var_name = program.build_export(
         config, eval_program, startup_prog)