diff --git a/src/vm.rs b/src/vm.rs
index e690d27..d98705a 100644
--- a/src/vm.rs
+++ b/src/vm.rs
@@ -159,6 +159,7 @@ pub fn eval<'src, 'a>(
                 None => Err(LudusError { msg: "No match" }),
             }
         }
+        Ast::Placeholder => todo!(),
         Ast::Error => todo!(),
         Ast::Dict(_) => todo!(),
         Ast::Arguments(_) => todo!(),