diff --git a/tools/fep/nti.py b/tools/fep/nti.py
index ffe47fb908..cd426163bc 100755
--- a/tools/fep/nti.py
+++ b/tools/fep/nti.py
@@ -19,7 +19,7 @@ while line.startswith("#"):
 tok = line.split()
 lo = float(tok[1])
 
-i = 0
+i = 1
 sum = 0.0
 for line in sys.stdin:
     tok = line.split()