diff --git a/manila/share/drivers/huawei/constants.py b/manila/share/drivers/huawei/constants.py
index 98f64bf033..548df91faa 100644
--- a/manila/share/drivers/huawei/constants.py
+++ b/manila/share/drivers/huawei/constants.py
@@ -31,6 +31,8 @@ ACCESS_CIFS_RO = "0"
 ERROR_CONNECT_TO_SERVER = -403
 ERROR_UNAUTHORIZED_TO_SERVER = -401
 
+ALLOC_TYPE_THIN_FLAG = "1"
+
 OPTS_CAPABILITIES = {
     'dedupe': False,
     'compression': False,
diff --git a/manila/share/drivers/huawei/v3/connection.py b/manila/share/drivers/huawei/v3/connection.py
index c4084b8e50..85bc095e26 100644
--- a/manila/share/drivers/huawei/v3/connection.py
+++ b/manila/share/drivers/huawei/v3/connection.py
@@ -171,7 +171,7 @@ class V3StorageConnection(driver.HuaweiBase):
             LOG.error(err_msg)
             raise exception.InvalidShare(reason=err_msg)
 
-        if fs_info['ALLOCTYPE'] != '1':
+        if fs_info['ALLOCTYPE'] != constants.ALLOC_TYPE_THIN_FLAG:
             err_msg = (_("Share (%s) can not be shrunk. only 'Thin' shares "
                          "support shrink.")
                        % share_name)