diff --git a/python/obitools3/libalign/_solexapairend.pyx b/python/obitools3/libalign/_solexapairend.pyx
index 634a0cc..11f96aa 100755
--- a/python/obitools3/libalign/_solexapairend.pyx
+++ b/python/obitools3/libalign/_solexapairend.pyx
@@ -5,7 +5,7 @@ from cpython cimport array
 from .solexapairend import iterOnAligment
 from .shifted_ali cimport Ali_shifted
 
-from obitools3.dms.capi.obiview cimport Obiview_p, QUALITY_COLUMN, \
+from obitools3.dms.capi.obiview cimport Obiview_p, QUALITY_COLUMN, NUC_SEQUENCE_COLUMN, \
                                         obi_set_qual_int_with_elt_idx_and_col_p_in_view, \
                                         obi_set_str_with_elt_idx_and_col_p_in_view
                                         
@@ -233,7 +233,8 @@ def buildConsensus(ali, seq, ref_tags=None):
     seq[b'mode']=b'alignment'
 
     for tag in ref_tags:
-        if tag != REVERSE_SEQ_COLUMN_NAME and tag != REVERSE_QUALITY_COLUMN_NAME:
+        if tag != REVERSE_SEQ_COLUMN_NAME and tag != REVERSE_QUALITY_COLUMN_NAME and \
+            tag != NUC_SEQUENCE_COLUMN and tag != QUALITY_COLUMN:
             seq[tag] = ref_tags[tag]
 
     return seq