diff --git a/predict_PTM.py b/predict_PTM.py
index 66e1335f73378ba24f30acdb41459039bc553538..fa4295569403f290569004115cfc96e454d26281 100755
--- a/predict_PTM.py
+++ b/predict_PTM.py
@@ -58,7 +58,7 @@ else:
     else:
         raise Exception(str(args.fasta) + " is not found")
 
-ptm_predictor = PTM(args.ptm)
+ptm_predictor = PTM(args.ptm, args.nbPTMmax)
 
 for sequence in sequences:
     peptide = Peptide(sequence)