diff --git a/mxml.cxx b/mxml.cxx
index 9ed019f..39b2c2a 100644
--- a/mxml.cxx
+++ b/mxml.cxx
@@ -682,7 +682,7 @@ PMXML_NODE mxml_create_root_node(void)
 {
    PMXML_NODE root;
 
-   root = (PMXML_NODE)calloc(sizeof(MXML_NODE), 1);
+   root = (PMXML_NODE)calloc(1, sizeof(MXML_NODE));
    strcpy(root->name, "root"); // SAFE
    root->node_type = DOCUMENT_NODE;
 
@@ -2226,7 +2226,7 @@ PMXML_NODE mxml_clone_tree(PMXML_NODE tree)
    PMXML_NODE clone;
    int i;
 
-   clone = (PMXML_NODE)calloc(sizeof(MXML_NODE), 1);
+   clone = (PMXML_NODE)calloc(1, sizeof(MXML_NODE));
 
    /* copy name, node_type, n_attributes and n_children */
    memcpy(clone, tree, sizeof(MXML_NODE));