diff --git a/wenet/utils/class_utils.py b/wenet/utils/class_utils.py
index 3bda4db20..547117e9b 100644
--- a/wenet/utils/class_utils.py
+++ b/wenet/utils/class_utils.py
@@ -49,6 +49,7 @@
 }
 
 WENET_EMB_CLASSES = {
+    "embed": PositionalEncoding,
     "abs_pos": PositionalEncoding,
     "rel_pos": RelPositionalEncoding,
     "no_pos": NoPositionalEncoding,