diff --git a/data/potentials_normal.txt b/data/potentials_normal.txt
index 5896cf4ce64c51301cab72bf19d0400c5d185b22..0dbe341d2f845644077d5a1cf01dd550ff6ece62 100644
--- a/data/potentials_normal.txt
+++ b/data/potentials_normal.txt
@@ -2,5 +2,5 @@
 Fe	-100	-100	-100	-200	100
 Cr			-100	-100	-600	100
 Al					-100	-900	100
-O							-100	100
+O							-200	100
 X									0