diff --git a/src/main/java/ecnu/db/generator/constraintchain/filter/BoolExprNodeDeserializer.java b/src/main/java/ecnu/db/generator/constraintchain/filter/BoolExprNodeDeserializer.java
index ddfa598d..9f24da5f 100644
--- a/src/main/java/ecnu/db/generator/constraintchain/filter/BoolExprNodeDeserializer.java
+++ b/src/main/java/ecnu/db/generator/constraintchain/filter/BoolExprNodeDeserializer.java
@@ -40,7 +40,6 @@ public BoolExprNode deserialize(JsonParser parser, DeserializationContext deseri
             case UNI_FILTER_OPERATION -> mapper.readValue(node.toString(), UniVarFilterOperation.class);
             case MULTI_FILTER_OPERATION -> mapper.readValue(node.toString(), MultiVarFilterOperation.class);
             case ISNULL_FILTER_OPERATION -> mapper.readValue(node.toString(), IsNullFilterOperation.class);
-            default -> throw new IOException(String.format("无法识别的BoolExpr数据 %s", node));
         };
     }
 }