diff --git a/deluge/core/torrent.py b/deluge/core/torrent.py
index 33193c4dc..8d28e3c4b 100644
--- a/deluge/core/torrent.py
+++ b/deluge/core/torrent.py
@@ -1089,10 +1089,11 @@ class Torrent(object):
 
         try:
             # libtorrent needs unicode object if wstrings are enabled, utf8 bytestring otherwise
+            # Keyword argument flags=1 (fail_if_exist) stops overwriting of target files.
             try:
-                self.handle.move_storage(dest)
+                self.handle.move_storage(dest, flags=1)
             except TypeError:
-                self.handle.move_storage(utf8_encoded(dest))
+                self.handle.move_storage(utf8_encoded(dest), flags=1)
         except RuntimeError as ex:
             log.error("Error calling libtorrent move_storage: %s", ex)
             return False