2 files changed, 20 insertions, 1 deletions
diff --git a/askama_derive/src/generator.rs b/askama_derive/src/generator.rs
index 65136c6..6004aff 100644
--- a/askama_derive/src/generator.rs
+++ b/askama_derive/src/generator.rs
@@ -1945,7 +1945,7 @@ fn is_copyable_within_op(expr: &Expr<'_>, within_op: bool) -> bool {
 pub(crate) fn is_attr_self(expr: &Expr<'_>) -> bool {
     match expr {
         Expr::Attr(obj, _) if matches!(obj.as_ref(), Expr::Var("self")) => true,
-        Expr::Attr(obj, _) if matches!(obj.as_ref(), Expr::Attr(..)) => is_attr_self(expr),
+        Expr::Attr(obj, _) if matches!(obj.as_ref(), Expr::Attr(..)) => is_attr_self(obj),
         _ => false,
     }
 }
diff --git a/testing/tests/calls.rs b/testing/tests/calls.rs
index 052f34f..28d7491 100644
--- a/testing/tests/calls.rs
+++ b/testing/tests/calls.rs
@@ -80,3 +80,22 @@ fn test_one_func_binop() {
     };
     assert_eq!(t.render().unwrap(), "246");
 }
+
+fn double_attr_arg_helper(x: u32) -> u32 {
+    x * x + x
+}
+
+#[derive(askama::Template)]
+#[template(
+    source = "{{ self::double_attr_arg_helper(self.x.0 + 2) }}",
+    ext = "txt"
+)]
+struct DoubleAttrArg {
+    x: (u32,),
+}
+
+#[test]
+fn test_double_attr_arg() {
+    let t = DoubleAttrArg { x: (10,) };
+    assert_eq!(t.render().unwrap(), "156");
+}