1 files changed, 5 insertions, 3 deletions
diff --git a/sys/libbio/phylo.c b/sys/libbio/phylo.c
index 71901ba..d03bc48 100644
--- a/sys/libbio/phylo.c
+++ b/sys/libbio/phylo.c
@@ -51,18 +51,20 @@ phylo·rmchild(bio·Node* parent, bio·Node* child)
 error
 phylo·countnodes(bio·Node *node, int *n)
 {
+    int       m;
     error     err;
     bio·Node *child;
     
-    node->nnode = 0;
+    m = *n;
     for (child = node->child; child != nil; child = child->sibling) {
-        if (err = phylo·countnodes(child, &node->nnode), err) {
+        if (err = phylo·countnodes(child, n), err) {
             errorf("node count: failure at '%s'", child->name);
             return 1;
         }
     }
+    node->nnode = *n - m;
+    *n += 1;
 
-    *n += node->nnode + 1;
     return 0;
 }