diff --git a/src/alloc2/IAllocator_DArena.cpp b/src/alloc2/IAllocator_DArena.cpp
index 2a3a2d5..bffbd38 100644
--- a/src/alloc2/IAllocator_DArena.cpp
+++ b/src/alloc2/IAllocator_DArena.cpp
@@ -113,7 +113,7 @@ namespace xo {
         bool
         IAllocator_DArena::expand(DArena & s, size_t target_z) noexcept
         {
-            return s.expand(target_z);
+            return s.expand(target_z, __PRETTY_FUNCTION__);
         } /*expand*/
 
         std::byte *