diff --git a/db_structure.xml b/db_structure.xml
index feb7c0d122d..933b09988f0 100644
--- a/db_structure.xml
+++ b/db_structure.xml
@@ -891,7 +891,7 @@
 
 			<field>
 				<name>last_run</name>
-				<type>timestamp</type>
+				<type>integer</type>
 				<default></default>
 				<notnull>false</notnull>
 			</field>