diff --git a/bob/bio/base/pipelines/vanilla_biometrics/score_writers.py b/bob/bio/base/pipelines/vanilla_biometrics/score_writers.py
index a6e4f0f53c1f2eea059823c266e3d0f2551cfdfe..2574406cbce7211d22d17560c843afaeaf19a400 100644
--- a/bob/bio/base/pipelines/vanilla_biometrics/score_writers.py
+++ b/bob/bio/base/pipelines/vanilla_biometrics/score_writers.py
@@ -178,5 +178,8 @@ class CSVScoreWriter(ScoreWriter):
 
             for sset in samplesets:
                 for s in sset:
-                    f.writelines(s.data)
+                    if i==0:
+                        f.writelines(s.data)
+                    else:
+                        f.writelines(s.data[1:])
             samplesets_list[i] = None
\ No newline at end of file