diff --git a/library/init/lean/parser/term.lean b/library/init/lean/parser/term.lean
index 7eb5d63549..b191c5635f 100644
--- a/library/init/lean/parser/term.lean
+++ b/library/init/lean/parser/term.lean
@@ -55,7 +55,7 @@ def typeAscription := parser! " : " >> termParser
 def tupleTail      := parser! ", " >> sepBy1 termParser ", "
 def parenSpecial : Parser := optional (tupleTail <|> typeAscription)
 @[builtinTermParser] def paren := parser! symbol "(" appPrec >> optional (termParser >> parenSpecial) >> ")"
-@[builtinTermParser] def anonymousCtor := parser! symbol "⟨" appPrec >> sepBy1 termParser ", " >> "⟩"
+@[builtinTermParser] def anonymousCtor := parser! symbol "⟨" appPrec >> sepBy termParser ", " >> "⟩"
 def optIdent : Parser := optional (try (ident >> " : "))
 @[builtinTermParser] def «if»  := parser! "if " >> optIdent >> termParser >> " then " >> termParser >> " else " >> termParser
 def fromTerm   := parser! " from " >> termParser