diff --git a/moz_sql_parser/sql_parser.py b/moz_sql_parser/sql_parser.py
index <HASH>..<HASH> 100644
--- a/moz_sql_parser/sql_parser.py
+++ b/moz_sql_parser/sql_parser.py
@@ -99,7 +99,7 @@ KNOWN_OPS = [
     Literal("==").setName("eq").setDebugActions(*debug),
     Literal("!=").setName("neq").setDebugActions(*debug),
     IN.setName("in").setDebugActions(*debug),
-    NOTIN.setName("not in").setDebugActions(*debug),
+    NOTIN.setName("nin").setDebugActions(*debug),
     IS.setName("is").setDebugActions(*debug),
     LIKE.setName("like").setDebugActions(*debug),
     OR.setName("or").setDebugActions(*debug),
rename the not in keyword in SQL ast to nin