diff --git a/tests/span_tests.cpp b/tests/span_tests.cpp
index 8e90b57..e8c06e6 100644
--- a/tests/span_tests.cpp
+++ b/tests/span_tests.cpp
@@ -54,6 +54,7 @@ struct DerivedClass : BaseClass
 };
 struct AddressOverloaded
 {
+    AddressOverloaded operator&() const { return {}; }
 };
 }