diff --git a/src/include/duckdb/common/stl_allocator.hpp b/src/include/duckdb/common/stl_allocator.hpp
index c1cdd8c428ea..344b3a07ad80 100644
--- a/src/include/duckdb/common/stl_allocator.hpp
+++ b/src/include/duckdb/common/stl_allocator.hpp
@@ -37,7 +37,7 @@ class AllocationFunctions {
 	free_function_t free = nullptr;
 };
 
-extern AllocationFunctions DEFAULT_ALLOCATION_FUNCTIONS; // NOLINT: non-const on purpose
+extern DUCKDB_API AllocationFunctions DEFAULT_ALLOCATION_FUNCTIONS; // NOLINT: non-const on purpose
 
 template <class T>
 T *stl_new_array_uninitialized(size_t size) { // NOLINT: not using camelcase on purpose here
@@ -106,7 +106,7 @@ class stl_allocator { // NOLINT: not using camelcase on purpose here
 	using propagate_on_container_copy_assignment = std::true_type;
 	using propagate_on_container_move_assignment = std::true_type;
 	using propagate_on_container_swap = std::true_type;
-	using is_always_equal = std::true_type;
+	using is_always_equal = std::false_type; // because allocator is stateful
 	template <class U>
 	struct rebind {
 		typedef stl_allocator<U> other;