diff --git a/pdseg/eval.py b/pdseg/eval.py
index 31565b9a576be6048b7d0f0cf46e228faa02d2f4..bce5fe858b5d377abf883b0fb61817da525575eb 100644
--- a/pdseg/eval.py
+++ b/pdseg/eval.py
@@ -25,6 +25,7 @@ import sys
 import argparse
 import pprint
 import numpy as np
+import paddle
 import paddle.fluid as fluid
 
 from utils.config import cfg