diff --git a/src/main/java/com/aliyun/oss/internal/OSSObjectOperation.java b/src/main/java/com/aliyun/oss/internal/OSSObjectOperation.java
index 4cc0e266..54a3a4de 100644
--- a/src/main/java/com/aliyun/oss/internal/OSSObjectOperation.java
+++ b/src/main/java/com/aliyun/oss/internal/OSSObjectOperation.java
@@ -941,7 +941,10 @@ public boolean doesObjectExistWithRedirect(GenericRequest genericRequest) throws
             ossObject = this.getObject(getObjectRequest);
             return true;
         } catch (OSSException e) {
-            if (e.getErrorCode().equals(OSSErrorCode.NO_SUCH_BUCKET) || e.getErrorCode().equals(OSSErrorCode.NO_SUCH_KEY)) {
+            String errorCode = e.getErrorCode();
+            if (errorCode != null &&
+                    (errorCode.equals(OSSErrorCode.NO_SUCH_BUCKET) ||
+                            errorCode.equals(OSSErrorCode.NO_SUCH_KEY))) {
                 return false;
             }
             throw e;