diff --git a/project/jimmer-dto-compiler/src/main/antlr/org/babyfish/jimmer/dto/compiler/Dto.g4 b/project/jimmer-dto-compiler/src/main/antlr/org/babyfish/jimmer/dto/compiler/Dto.g4
index 5ade463b1f..c68eb97b7a 100644
--- a/project/jimmer-dto-compiler/src/main/antlr/org/babyfish/jimmer/dto/compiler/Dto.g4
+++ b/project/jimmer-dto-compiler/src/main/antlr/org/babyfish/jimmer/dto/compiler/Dto.g4
@@ -213,7 +213,7 @@ Identifier
 
 WhiteSpace
     :
-    (' ' | '\u0009' | '\u000C' | '\r' | '\n') -> skip
+    (' ' | '\u0009' | '\u000C' | '\r' | '\n') -> channel(HIDDEN)
     ;
 
 DocComment
@@ -223,12 +223,12 @@ DocComment
 
 BlockComment
     :
-    ('/*' .*? '*/') -> skip
+    ('/*' .*? '*/') -> channel(HIDDEN)
     ;
 
 LineComment
     :
-    ('//' ~[\r\n]* ('\r\n' | '\r' | '\n')?) -> skip
+    ('//' ~[\r\n]* ('\r\n' | '\r' | '\n')?) -> channel(HIDDEN)
     ;
 
 BooleanLiteral