diff --git a/tools/ete-toolkit/ete-treeviewer.xml b/tools/ete-toolkit/ete-treeviewer.xml
index 31200b2b4a5..019064a1f19 100644
--- a/tools/ete-toolkit/ete-treeviewer.xml
+++ b/tools/ete-toolkit/ete-treeviewer.xml
@@ -32,7 +32,7 @@ curl http://etetoolkit.org/get_svg/
 
 #if $output_format == 'png'
     && magick tree.svg tree.png
-    && cp tree.png '$output_tree_image'
+    && mv tree.png '$output_tree_image'
 #else
     && cp tree.svg '$output_tree_image'
 #end if