diff --git a/Source/Swig/tree.c b/Source/Swig/tree.c
index 46571fc09..e2162b7f1 100644
--- a/Source/Swig/tree.c
+++ b/Source/Swig/tree.c
@@ -225,7 +225,7 @@ void removeNode(Node *n) {
   /* Delete attributes */
   Delattr(n,"parentNode");
   Delattr(n,"nextSibling");
-  Delattr(n,"prevSibling");
+  Delattr(n,"previousSibling");
 }
 
 /* -----------------------------------------------------------------------------