diff --git a/src/test/basics/Number_test.cpp b/src/test/basics/Number_test.cpp
index da4a0567f9..5799ce7171 100644
--- a/src/test/basics/Number_test.cpp
+++ b/src/test/basics/Number_test.cpp
@@ -2057,7 +2057,7 @@ public:
             // number to avoid overflow and UB
             Number const n{
                 true,
-                -static_cast<std::uint64_t>(std::numeric_limits<std::int64_t>::min()) + 1,
+                static_cast<std::uint64_t>(std::numeric_limits<std::int64_t>::max()) + 1,
                 0,
                 Number::Normalized{}};