diff --git a/tests/issues.cpp b/tests/issues.cpp
index abe2208..25db813 100644
--- a/tests/issues.cpp
+++ b/tests/issues.cpp
@@ -147,7 +147,7 @@ struct move_tracker {
             : moved(orig.moved + 1) {}
 
         constexpr move_tracker &
-        operator=(move_tracker const &other) noexcept = default;
+        operator=(move_tracker const &other) noexcept {};
         
         constexpr move_tracker &operator=(move_tracker &&orig) noexcept {
           moved = orig.moved + 1;