diff --git a/netmap/policy.go b/netmap/policy.go
index 6139f9f..28b5390 100644
--- a/netmap/policy.go
+++ b/netmap/policy.go
@@ -553,6 +553,7 @@ func writeFilterStringTo(w io.StringWriter, f netmap.Filter) error {
 func (p *PlacementPolicy) DecodeString(s string) error {
 	input := antlr.NewInputStream(s)
 	lexer := parser.NewQueryLexer(input)
+	lexer.RemoveErrorListeners()
 	stream := antlr.NewCommonTokenStream(lexer, 0)
 
 	pp := parser.NewQuery(stream)