diff --git a/product/ZSQLCatalog/SearchKey/SearchKey.py b/product/ZSQLCatalog/SearchKey/SearchKey.py
index 684a411feef02a0473f24f42b1de273e9823a005..936ead04b962d9bf80cce11352ae8b27698cb6e6 100644
--- a/product/ZSQLCatalog/SearchKey/SearchKey.py
+++ b/product/ZSQLCatalog/SearchKey/SearchKey.py
@@ -39,7 +39,8 @@ single_operator_dict = {
   'min': '>=',
   'max': '<',
   'ngt': '<=',
-  'nlt': '>'
+  'nlt': '>',
+  'neq': '!='
 }
 
 dual_operator_dict = {