diff --git a/htdocs/install/upgrade2.php b/htdocs/install/upgrade2.php
index 1f53780461e..fd063b40a26 100644
--- a/htdocs/install/upgrade2.php
+++ b/htdocs/install/upgrade2.php
@@ -494,7 +494,7 @@ if (!GETPOST('action', 'aZ09') || preg_match('/upgrade/i', GETPOST('action', 'aZ
 			}
 
 			// Scripts for 18.0
-			$afterversionarray = explode('.', '170.9');
+			$afterversionarray = explode('.', '17.0.9');
 			$beforeversionarray = explode('.', '18.0.9');
 			if (versioncompare($versiontoarray, $afterversionarray) >= 0 && versioncompare($versiontoarray, $beforeversionarray) <= 0) {
 				migrate_contractdet_rank();