diff --git a/deluge/core/core.py b/deluge/core/core.py
index e385d6788..1eb80eb20 100644
--- a/deluge/core/core.py
+++ b/deluge/core/core.py
@@ -97,9 +97,9 @@ class Core(component.Component):
         self.settings.send_redundant_have = True
         if deluge.common.windows_check():
             self.settings.disk_io_write_mode = \
-                lt.io_buffer_mode_t.disable_os_cache_for_aligned_files
+                lt.io_buffer_mode_t.disable_os_cache
             self.settings.disk_io_read_mode = \
-                lt.io_buffer_mode_t.disable_os_cache_for_aligned_files
+                lt.io_buffer_mode_t.disable_os_cache
         self.session.set_settings(self.settings)
 
         # Load metadata extension