diff --git a/image_list.py b/image_list.py
index c80dffe..2c53e50 100755
--- a/image_list.py
+++ b/image_list.py
@@ -75,6 +75,19 @@ def delete_nonexisting(sqlfile):
             print('removing.. '+row[0])
             dbdel.execute("DELETE FROM list where file == ?",(row[0],))            
     conn.commit()
+    # database may have duplicate files due to crash etc.. 
+    db.execute("SELECT file,date,count(*) FROM list GROUP BY file HAVING count(*) > 1 ")
+    dupfile=[]
+    for row in db:
+        print(row)
+        #hash=row[0]
+        #dbh.execute("SELECT file,width,height,date FROM list WHERE hash = ?",(hash,))
+        #flist=[]
+        #for row in dbh:
+        #    flist.append(row)
+        #flist.sort(key=lambda file: file[3])
+        #duphash.append((hash, flist))
+    #duphash.sort(key=lambda file: file[1][0])
     return
     
 def delete_files(files):