diff --git a/src/protocol/ast.rs b/src/protocol/ast.rs
index e293677ea5b26a0c226fbca3ba5572bcf4810408..2d81d1aabb71209306ea0e326894ffd1af6378e8 100644
--- a/src/protocol/ast.rs
+++ b/src/protocol/ast.rs
@@ -2271,6 +2271,7 @@ pub struct CallExpression {
     pub position: InputPosition,
     pub method: Method,
     pub arguments: Vec<ExpressionId>,
+    pub poly_args: Vec<ParserTypeId>,
     // Phase 2: linker
     pub parent: ExpressionParent,
 }