diff --git a/tools/analysis_tools/get_flops.py b/tools/analysis_tools/get_flops.py
index caa97203a..092520f47 100644
--- a/tools/analysis_tools/get_flops.py
+++ b/tools/analysis_tools/get_flops.py
@@ -38,6 +38,7 @@ def main():
     cfg = Config.fromfile(args.config)
     init_default_scope(cfg.get('default_scope', 'mmocr'))
     model = MODELS.build(cfg.model)
+    model.eval()
 
     flops = FlopCountAnalysis(model, torch.ones(input_shape))