diff --git a/src/protocol/tests/parser_validation.rs b/src/protocol/tests/parser_validation.rs
index 6a414915213d4489b8501aab995fefb260e97779..112e6264b41ec11ead733918afbb01359437cad0 100644
--- a/src/protocol/tests/parser_validation.rs
+++ b/src/protocol/tests/parser_validation.rs
@@ -64,7 +64,7 @@ fn test_correct_struct_instance() {
         "
     );
 
-    Tester::new_single_source_expr_ok(
+    Tester::new_single_source_expect_ok(
         "multiple fields, different explicit polymorph",
         "
         struct Pair<T1, T2>{ T1 first, T2 second }