diff --git a/src/main/wacc/ast.scala b/src/main/wacc/ast.scala
index c6e743e..7e84b14 100644
--- a/src/main/wacc/ast.scala
+++ b/src/main/wacc/ast.scala
@@ -119,9 +119,13 @@ object ast {
   case class Print(expr: Expr, newline: Boolean) extends Stmt
   object Print extends ParserBridge2[Expr, Boolean, Print]
   case class If(cond: Expr, thenStmt: NonEmptyList[Stmt], elseStmt: NonEmptyList[Stmt]) extends Stmt
-  object If extends ParserBridge3[Expr, NonEmptyList[Stmt], NonEmptyList[Stmt], If]
+  object If extends ParserBridge3[Expr, NonEmptyList[Stmt], NonEmptyList[Stmt], If] {
+    override def labels = List("if statement")
+  }
   case class While(cond: Expr, body: NonEmptyList[Stmt]) extends Stmt
-  object While extends ParserBridge2[Expr, NonEmptyList[Stmt], While]
+  object While extends ParserBridge2[Expr, NonEmptyList[Stmt], While] {
+    override def labels = List("while statement")
+  }
   case class Block(stmt: NonEmptyList[Stmt]) extends Stmt
   object Block extends ParserBridge1[NonEmptyList[Stmt], Block]