diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java
index ae91ff5c2..0b0f720a0 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java
@@ -60,7 +60,6 @@ public class LiteFlowChainELBuilder {
         EXPRESS_RUNNER.addFunctionAndClassMethod(ChainConstant.TO, Object.class, new ToOperator());
         EXPRESS_RUNNER.addFunctionAndClassMethod(ChainConstant.TO.toLowerCase(), Object.class, new ToOperator());
         EXPRESS_RUNNER.addFunctionAndClassMethod(ChainConstant.DEFAULT, Object.class, new DefaultOperator());
-        EXPRESS_RUNNER.addFunctionAndClassMethod(ChainConstant.DEFAULT.toLowerCase(), Object.class, new DefaultOperator());
         EXPRESS_RUNNER.addFunctionAndClassMethod(ChainConstant.TAG, Object.class, new TagOperator());
         EXPRESS_RUNNER.addFunctionAndClassMethod(ChainConstant.ANY, Object.class, new AnyOperator());
         EXPRESS_RUNNER.addFunctionAndClassMethod(ChainConstant.ID, Object.class, new IdOperator());
diff --git a/liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/resources/switchcase/flow.el.xml b/liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/resources/switchcase/flow.el.xml
index 295b845e6..ee853dd0b 100644
--- a/liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/resources/switchcase/flow.el.xml
+++ b/liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/resources/switchcase/flow.el.xml
@@ -46,7 +46,7 @@
     <chain name="chain7">
         THEN(
         a,
-        SWITCH(i).to(b, c).default(d)
+        SWITCH(i).to(b, c).DEFAULT(d)
         );
     </chain>