diff --git a/data/schema/device-schema.sql b/data/schema/device-schema.sql
index 4b8604cd0..501487dba 100644
--- a/data/schema/device-schema.sql
+++ b/data/schema/device-schema.sql
@@ -34,22 +34,22 @@ CREATE TABLE device_%deviceid_songs (
   beginning INTEGER NOT NULL DEFAULT 0,
   length INTEGER NOT NULL DEFAULT 0,
 
-  bitrate INTEGER NOT NULL DEFAULT 0,
-  samplerate INTEGER NOT NULL DEFAULT 0,
-  bitdepth INTEGER NOT NULL DEFAULT 0,
+  bitrate INTEGER NOT NULL DEFAULT -1,
+  samplerate INTEGER NOT NULL DEFAULT -1,
+  bitdepth INTEGER NOT NULL DEFAULT -1,
 
   source INTEGER NOT NULL DEFAULT 0,
-  directory_id INTEGER NOT NULL,
+  directory_id INTEGER NOT NULL DEFAULT -1,
   url TEXT NOT NULL,
   filetype INTEGER NOT NULL DEFAULT 0,
-  filesize INTEGER NOT NULL DEFAULT 0,
-  mtime INTEGER NOT NULL DEFAULT 0,
-  ctime INTEGER NOT NULL DEFAULT 0,
+  filesize INTEGER NOT NULL DEFAULT -1,
+  mtime INTEGER NOT NULL DEFAULT -1,
+  ctime INTEGER NOT NULL DEFAULT -1,
   unavailable INTEGER DEFAULT 0,
 
   playcount INTEGER NOT NULL DEFAULT 0,
   skipcount INTEGER NOT NULL DEFAULT 0,
-  lastplayed INTEGER NOT NULL DEFAULT 0,
+  lastplayed INTEGER NOT NULL DEFAULT -1,
 
   compilation_detected INTEGER DEFAULT 0,
   compilation_on INTEGER NOT NULL DEFAULT 0,