diff --git a/apps/files_sharing/appinfo/database.xml b/apps/files_sharing/appinfo/database.xml
index fa56dbe803d..bb80484bd63 100644
--- a/apps/files_sharing/appinfo/database.xml
+++ b/apps/files_sharing/appinfo/database.xml
@@ -13,26 +13,33 @@
 				<notnull>true</notnull>
 				<length>128</length>
 			</field>
+			<field>
+				<name>source</name>
+				<type>text</type>
+				<notnull>true</notnull>
+				<length>128</length>
+			</field>
+			<field>
+				<name>target</name>
+				<type>text</type>
+				<notnull>true</notnull>
+				<length>128</length>
+			</field>
 			<field>
 				<name>uid_owner</name>
 				<type>text</type>
-				<default></default>
 				<notnull>true</notnull>
 				<length>64</length>
 			</field>
 			<field>
 				<name>uid_shared_with</name>
 				<type>text</type>
-				<default>
-				</default>
 				<notnull>true</notnull>
 				<length>64</length>
 			 </field>
 			 <field>
 				<name>permissions</name>
 				<type>text</type>
-				<default>
-				</default>
 				<notnull>true</notnull>
 				<length>3</length>
 			 </field>