diff --git a/ompi/mca/mpool/base/mpool_base_alloc.c b/ompi/mca/mpool/base/mpool_base_alloc.c
index 79e2d57d42..582a8306e5 100644
--- a/ompi/mca/mpool/base/mpool_base_alloc.c
+++ b/ompi/mca/mpool/base/mpool_base_alloc.c
@@ -217,7 +217,6 @@ void * mca_mpool_base_alloc(size_t size, ompi_info_t * info)
             }
             return NULL;
         } else { 
-            mpool_tree_item->key = mem;
             mpool_tree_item->mpools[j] = mpool;
             mpool_tree_item->regs[j++] = registration;
             num_modules++;
diff --git a/ompi/mca/mpool/base/mpool_base_tree.c b/ompi/mca/mpool/base/mpool_base_tree.c
index 0c4ee3ecdc..3e12b6007d 100644
--- a/ompi/mca/mpool/base/mpool_base_tree.c
+++ b/ompi/mca/mpool/base/mpool_base_tree.c
@@ -81,7 +81,7 @@ int mca_mpool_base_tree_delete(mca_mpool_base_tree_item_t* item) {
     rc = ompi_rb_tree_delete(&mca_mpool_base_tree, item->key); 
     if(OMPI_SUCCESS == rc) { 
         OMPI_FREE_LIST_RETURN(&mca_mpool_base_tree_item_free_list, 
-                              item->key); 
+                              item); 
     }
     return rc;
 }