diff --git a/fe/fe-core/src/main/java/org/apache/doris/tablefunction/S3TableValuedFunction.java b/fe/fe-core/src/main/java/org/apache/doris/tablefunction/S3TableValuedFunction.java
index 7a9566c13e0882e..a93717d03c4bf45 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/tablefunction/S3TableValuedFunction.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/tablefunction/S3TableValuedFunction.java
@@ -57,10 +57,9 @@ public class S3TableValuedFunction extends ExternalFileTableValuedFunction {
 
     public S3TableValuedFunction(Map<String, String> properties) throws AnalysisException {
         final boolean isAzureTvf = AzureProperties.checkAzureProviderPropertyExist(properties);
-        // Azure could run without region
-        if (isAzureTvf) {
-            properties.put(S3Properties.REGION, "DUMMY-REGION");
-        }
+        // For Azure, the REGION in S3 properties is ignored
+        // However, we can't modify properties because the map is immutable
+
         // 1. analyze common properties
         Map<String, String> otherProps = super.parseCommonProperties(properties);