diff --git a/awrams.py b/awrams.py
index dd7515a..beb40a9 100644
--- a/awrams.py
+++ b/awrams.py
@@ -989,7 +989,7 @@ class AWRAMS(object):
 
     def getWavelength(self,ramsesdict:dict) -> np.ndarray:
         ret = []
-        for i in range(1,256):
+        for i in range(2,257):
             tmp = float(ramsesdict['c0s']) + float(ramsesdict['c1s'])*i \
                         + float(ramsesdict['c2s'])*i*i + float(ramsesdict['c3s'])*i*i*i
             ret.append(tmp)