diff --git a/dep/cos_migrate_tool-1.0-jar-with-dependencies.jar b/dep/cos_migrate_tool-1.0-jar-with-dependencies.jar
index 1dd0970..0092019 100644
Binary files a/dep/cos_migrate_tool-1.0-jar-with-dependencies.jar and b/dep/cos_migrate_tool-1.0-jar-with-dependencies.jar differ
diff --git a/src/main/java/com/qcloud/cos_migrate_tool/config/ConfigParser.java b/src/main/java/com/qcloud/cos_migrate_tool/config/ConfigParser.java
index 1906e55..f43f240 100644
--- a/src/main/java/com/qcloud/cos_migrate_tool/config/ConfigParser.java
+++ b/src/main/java/com/qcloud/cos_migrate_tool/config/ConfigParser.java
@@ -643,7 +643,7 @@ private boolean initCopyBucketConfig(Preferences prefs, CopyBucketConfig copyBuc
             copyBucketConfig.setSrcCosPath(srcCosPath);
             
             String srcEndpointSuffix = getConfigValue(prefs, COPY_BUCKET_SECTION_NAME, COPY_SRC_ENDPOINT_SUFFIX);
-            if (srcEndpointSuffix != null) {
+            if (srcEndpointSuffix != null && !srcEndpointSuffix.trim().isEmpty()) {
                 copyBucketConfig.setSrcEndpointSuffix(srcEndpointSuffix);
             }