diff --git a/src/tools/sort_wf.irp.f b/src/tools/sort_wf.irp.f
new file mode 100644
index 00000000..2e0014ea
--- /dev/null
+++ b/src/tools/sort_wf.irp.f
@@ -0,0 +1,7 @@
+program sort_wf
+ implicit none
+ read_wf = .true.
+ touch read_wf 
+ call save_wavefunction
+
+end