diff --git a/python/obitools3/commands/uniq.pyx b/python/obitools3/commands/uniq.pyx
index 24cfc0a..202c88a 100644
--- a/python/obitools3/commands/uniq.pyx
+++ b/python/obitools3/commands/uniq.pyx
@@ -2,7 +2,8 @@
 
 from obitools3.apps.progress cimport ProgressBar  # @UnresolvedImport
 from obitools3.dms import DMS
-from obitools3.dms.view.view cimport View, Line
+from obitools3.dms.view.view cimport View
+from obitools3.dms.obiseq cimport Nuc_Seq_Stored
 from obitools3.dms.view import RollbackException
 from obitools3.dms.view.typed_view.view_NUC_SEQS cimport View_NUC_SEQS
 from obitools3.dms.column.column cimport Column, Column_line
@@ -49,16 +50,16 @@ def addOptions(parser):
 
 cdef merge_taxonomy_classification(View_NUC_SEQS o_view, Taxonomy taxonomy) :
     
-    cdef int    taxid
-    cdef Line   seq
-    cdef list   m_taxids
-    cdef bytes  k
-    cdef object tsp
-    cdef object tgn
-    cdef object tfa
-    cdef object sp_sn
-    cdef object gn_sn
-    cdef object fa_sn
+    cdef int             taxid
+    cdef Nuc_Seq_Stored  seq
+    cdef list            m_taxids
+    cdef bytes           k
+    cdef object          tsp
+    cdef object          tgn
+    cdef object          tfa
+    cdef object          sp_sn
+    cdef object          gn_sn
+    cdef object          fa_sn
 
     # Create columns
     if b"species" in o_view and o_view[b"species"].data_type_int != OBI_INT :
@@ -196,9 +197,9 @@ cdef uniq_sequences(View_NUC_SEQS view, View_NUC_SEQS o_view, ProgressBar pb, li
     cdef dict           mkey_infos
     cdef dict           merged_dict
     cdef dict           mkey_cols
-    cdef Line           i_seq
-    cdef Line           o_seq
-    cdef Line           u_seq
+    cdef Nuc_Seq_Stored i_seq
+    cdef Nuc_Seq_Stored o_seq
+    cdef Nuc_Seq_Stored u_seq
     cdef Column         i_col
     cdef Column         i_seq_col
     cdef Column         i_id_col