diff --git a/script/test-move-mono.py b/script/test-move-mono.py
index f97938fd..8865e572 100644
--- a/script/test-move-mono.py
+++ b/script/test-move-mono.py
@@ -1,4 +1,4 @@
 #MonoEnergy.write(110.0)
 
-Eph.write(600.0)
+Eph.write(500.0)
 print("DONE")
\ No newline at end of file