diff --git a/redGrapes/task/task_space.cpp b/redGrapes/task/task_space.cpp
index 98c49a5f..50d917d7 100644
--- a/redGrapes/task/task_space.cpp
+++ b/redGrapes/task/task_space.cpp
@@ -16,6 +16,11 @@
 
 namespace redGrapes
 {
+void TaskSpaceDeleter::operator() ( TaskSpace * s )
+    {
+        delete s;
+    }
+
     TaskSpace::~TaskSpace()
     {
     }
diff --git a/redGrapes/task/task_space.hpp b/redGrapes/task/task_space.hpp
index 1aed1df8..1daa960d 100644
--- a/redGrapes/task/task_space.hpp
+++ b/redGrapes/task/task_space.hpp
@@ -28,12 +28,12 @@ namespace redGrapes
 struct Task;
  
 struct TaskSpace;
-struct TaskSpaceDeleter {
-    void operator() ( TaskSpace * space ) {
-        delete space;
-    }
-};
 
+struct TaskSpaceDeleter
+{
+    void operator() ( TaskSpace * space );
+};
+  
 /*! TaskSpace handles sub-taskspaces of child tasks
  */
 struct TaskSpace
diff --git a/redGrapes/util/atomic_list.hpp b/redGrapes/util/atomic_list.hpp
index fa14b6e7..61619285 100644
--- a/redGrapes/util/atomic_list.hpp
+++ b/redGrapes/util/atomic_list.hpp
@@ -45,17 +45,10 @@ template <
 >
 struct AtomicList
 {
-   struct ItemControlBlock;
-
+    struct ItemControlBlock;
     struct ItemControlBlockDeleter
     {
-        void operator() ( ItemControlBlock * e )
-        {
-            auto alloc = e->alloc;
-            e->~ItemControlBlock();
-            memory::Block blk { (uintptr_t)e, sizeof(ItemControlBlock)+sizeof(Item) };
-            alloc.deallocate( blk );
-        }
+        void operator() ( ItemControlBlock* );
     };
 
     struct ItemControlBlock : Refcounted< ItemControlBlock, ItemControlBlockDeleter >
@@ -306,6 +299,16 @@ struct AtomicList
     }
 };
 
+
+template < typename Item, typename Allocator >
+void AtomicList< Item, Allocator >::ItemControlBlockDeleter::operator() ( AtomicList< Item, Allocator >::ItemControlBlock * e )
+{
+    Allocator alloc = e->alloc;
+    e->~ItemControlBlock();
+    memory::Block blk { (uintptr_t)e, 0 };
+    alloc.deallocate( blk );
+}
+
 } // namespace memory
 
 } // namespace redGrapes