diff --git a/org.eclipse.titan.designer/src/org/eclipse/titan/designer/parsers/ttcn3parser/Ttcn3DocCommentLexer.g4 b/org.eclipse.titan.designer/src/org/eclipse/titan/designer/parsers/ttcn3parser/Ttcn3DocCommentLexer.g4
index f296f29c36e1363f06724e22cecba63901b69425..55aa93e33955255518b372455a415d49b908dcc4 100755
--- a/org.eclipse.titan.designer/src/org/eclipse/titan/designer/parsers/ttcn3parser/Ttcn3DocCommentLexer.g4
+++ b/org.eclipse.titan.designer/src/org/eclipse/titan/designer/parsers/ttcn3parser/Ttcn3DocCommentLexer.g4
@@ -76,4 +76,4 @@ fragment FREETEXTCHAR:  [\u0021-\u0029\u002b-\u002e\u0030-\u003f\u0041-\u007e\u0
 
 fragment LINE_BEGIN:    '//*' STAR*;
 
-BROKEN_AT:			'@' { createMarker("Character '@' should be escaped like '@@'"); } -> skip;
+BROKEN_AT:			'@' { /* createMarker("Character '@' should be escaped like '@@'"); */ } -> skip;