diff --git a/tools/ecoPCRFormat.py b/tools/ecoPCRFormat.py
index c09caf2..7324212 100755
--- a/tools/ecoPCRFormat.py
+++ b/tools/ecoPCRFormat.py
@@ -363,12 +363,12 @@ def ecoSeqWriter(file,input,taxindex,parser=genbankParser):
                 seqcount+=1
                 output.write(ecoSeqPacker(entry))
             else:
-                skipped.append[entry['id']]
+                skipped.append(entry['id'])
             where = universalTell(input)
             progressBar(where, inputsize)
             print >>sys.stderr," Readed sequences : %d     " % seqcount,
         else:
-            skipped.append[entry['id']]
+            skipped.append(entry['id'])
         
     print >>sys.stderr
     output.seek(0,0)