diff --git a/idea/src/org/jetbrains/jet/lexer/JetTokens.java b/idea/src/org/jetbrains/jet/lexer/JetTokens.java
index d1b495ff541..d794012bc97 100644
--- a/idea/src/org/jetbrains/jet/lexer/JetTokens.java
+++ b/idea/src/org/jetbrains/jet/lexer/JetTokens.java
@@ -132,7 +132,8 @@ public interface JetTokens {
             THIS_KEYWORD, VAL_KEYWORD, VAR_KEYWORD, FUN_KEYWORD, DECOMPOSER_KEYWORD, EXTENSION_KEYWORD, FOR_KEYWORD,
             NULL_KEYWORD, TYPEOF_KEYWORD, NEW_KEYWORD, TRUE_KEYWORD, FALSE_KEYWORD, IS_KEYWORD,
             IN_KEYWORD, THROW_KEYWORD, RETURN_KEYWORD, BREAK_KEYWORD, CONTINUE_KEYWORD, OBJECT_KEYWORD, IF_KEYWORD,
-            ELSE_KEYWORD, WHILE_KEYWORD, DO_KEYWORD, MATCH_KEYWORD, REF_KEYWORD, OUT_KEYWORD, TRY_KEYWORD, CASE_KEYWORD
+            ELSE_KEYWORD, WHILE_KEYWORD, DO_KEYWORD, MATCH_KEYWORD, REF_KEYWORD, OUT_KEYWORD, TRY_KEYWORD, CASE_KEYWORD,
+            NOT_IN, NOT_IS
     );
 
     TokenSet SOFT_KEYWORDS = TokenSet.create(WRAPS_KEYWORD, IMPORT_KEYWORD, WHERE_KEYWORD, BY_KEYWORD, LAZY_KEYWORD, GET_KEYWORD,