diff --git a/ppocr/modeling/necks/db_fpn.py b/ppocr/modeling/necks/db_fpn.py
index 35adaff7c9361ab38d365f0eab88834effebfec4..f930bb5c45631ef6428a71d9a6d7d8fc1bdf6cf6 100644
--- a/ppocr/modeling/necks/db_fpn.py
+++ b/ppocr/modeling/necks/db_fpn.py
@@ -120,6 +120,7 @@ class CALayer(nn.Layer):
     def __init__(self, in_channels, out_channels, kernel_size, shortcut=True):
         super(CALayer, self).__init__()
         weight_attr = paddle.nn.initializer.KaimingUniform()
+        self.out_channels = out_channels
         self.in_conv = nn.Conv2D(
             in_channels=in_channels,
             out_channels=self.out_channels,