diff --git a/new_partition/interface_partition.py b/new_partition/interface_partition.py
index 16a3360..cb181a2 100755
--- a/new_partition/interface_partition.py
+++ b/new_partition/interface_partition.py
@@ -916,7 +916,7 @@ def del_msdos_partition(partition,dev):
                 elif re.search('free', pre_partition) and not re.search('free', next_partition):
                     if locals().has_key('extended_start') and \
                             (float(get_num(p_d.Partition.dict[dev]['partition'][pre_partition]['start']))\
-                            >= float(get_num(extended_start)) or \
+                            >= float(get_num(extended_start)) and \
                             float(get_num(p_d.Partition.dict[dev]['partition'][pre_partition]['end']))\
                             <= float(get_num(extended_end))):
                         len_free_list = len(p_d.sort_partitions(p_d.Partition.dict, dev, "free"))