diff --git a/upgrades/6.0/scripts/BeforeUpgrade.php b/upgrades/6.0/scripts/BeforeUpgrade.php
index ae16e666b4..fb9fe10d05 100644
--- a/upgrades/6.0/scripts/BeforeUpgrade.php
+++ b/upgrades/6.0/scripts/BeforeUpgrade.php
@@ -105,7 +105,7 @@ class BeforeUpgrade
         if ($extension) {
             $version = $extension->get('version');
 
-            if (version_compare($version, '1.5.0', '<')) {
+            if (version_compare($version, '1.4.2', '<')) {
                 $message =
                     "EspoCRM 6.0.0 is not compatible with VoIP Integration extension of a version lower than 1.5.0. " .
                     "Please upgrade the extension or uninstall it. Then run the upgrade command again.";