diff --git a/info/labs/amy-specification/AmySpec.md b/info/labs/amy-specification/AmySpec.md
index 4bb8bd927c78ff3089cff2c2229f7f149d30a50e..538ec03a06ad9dbcb53d9ea649e7cfd0cc2c4bab 100644
--- a/info/labs/amy-specification/AmySpec.md
+++ b/info/labs/amy-specification/AmySpec.md
@@ -218,7 +218,7 @@ BinOp ::= + | - | * | / | % | < | <=
 UnaryOp ::= - | !
 
 MatchCase ::= case Pattern => Expr
-Pattern ::= [ Id . ]? Id ( Patterns ) | Id | Literal |
+Pattern ::= [ Id . ]? Id ( Patterns ) | Id | Literal | _
 Patterns ::= ϵ | Pattern [ , Pattern ]∗
 
 Args ::= ϵ | Expr [ , Expr ]∗