diff --git a/patches/december_2012/file_list_rename.py b/patches/december_2012/file_list_rename.py
new file mode 100644
index 0000000000..52657ac2d6
--- /dev/null
+++ b/patches/december_2012/file_list_rename.py
@@ -0,0 +1,10 @@
+import webnotes
+
+def execute():
+	for dt in webnotes.conn.sql("""select distinct parent from tabDocField 
+		where fieldname='file_list'"""):
+		try:
+			webnotes.conn.sql("""update `tab%s` set file_list = 
+				replace(file_list, "-", "")""" % dt[0])
+		except Exception, e:
+			if e.args[0]!=1146: raise e
\ No newline at end of file
diff --git a/patches/patch_list.py b/patches/patch_list.py
index 0b079b8db8..645f18ce4d 100644
--- a/patches/patch_list.py
+++ b/patches/patch_list.py
@@ -733,4 +733,8 @@ patch_list = [
 		'patch_module': 'patches.december_2012',
 		'patch_file': 'fix_default_print_format',
 	},
+	{
+		'patch_module': 'patches.december_2012',
+		'patch_file': 'file_list_rename',
+	},
 ]
\ No newline at end of file