diff --git a/src/Infrastructure/MigrationStep/S015FromSourcePimConfiguredToSourcePimApiConfigured.php b/src/Infrastructure/MigrationStep/S015FromSourcePimConfiguredToSourcePimApiConfigured.php
index c244001..235a7cd 100644
--- a/src/Infrastructure/MigrationStep/S015FromSourcePimConfiguredToSourcePimApiConfigured.php
+++ b/src/Infrastructure/MigrationStep/S015FromSourcePimConfiguredToSourcePimApiConfigured.php
@@ -71,7 +71,7 @@ private function askForBaseUri(string $defaultResponse): string
         $validator = function ($answer) {
             // This URI validation regex is intentionally imperfect.
             // It's goal is only to avoid common mistakes like forgetting "http", or adding parameters from a copy/paste.
-            if (0 === preg_match('~^https?:\/\/[a-z0-9]+[a-z0-9\-\.]*[a-z0-9]+\/?$~i', $answer)) {
+            if (0 === preg_match('~^https?:\/\/[a-z0-9]+[a-z0-9\-\.]*[a-z0-9]+\/?(?:\:\d{1,4})?$~i', $answer)) {
                 throw new \RuntimeException(
                     $this->translator->trans(
                         'from_source_pim_configured_to_source_pim_api_configured.on_source_pim_api_configuration.base_uri.error_message'
diff --git a/src/Infrastructure/MigrationStep/S050FromDestinationPimDownloadedToDestinationPimInstalled.php b/src/Infrastructure/MigrationStep/S050FromDestinationPimDownloadedToDestinationPimInstalled.php
index 074485d..421be68 100644
--- a/src/Infrastructure/MigrationStep/S050FromDestinationPimDownloadedToDestinationPimInstalled.php
+++ b/src/Infrastructure/MigrationStep/S050FromDestinationPimDownloadedToDestinationPimInstalled.php
@@ -168,7 +168,7 @@ public function onDestinationPimApiConfiguration(Event $event)
                 function ($answer) {
                     // This URI validation regex is intentionally imperfect.
                     // It's goal is only to avoid common mistakes like forgetting "http", or adding parameters from a copy/paste.
-                    if (0 === preg_match('~^https?:\/\/[a-z0-9]+[a-z0-9\-\.]*[a-z0-9]+\/?$~i', $answer)) {
+                    if (0 === preg_match('~^https?:\/\/[a-z0-9]+[a-z0-9\-\.]*[a-z0-9]+\/?(?:\:\d{1,4})?$~i', $answer)) {
                         throw new \RuntimeException(
                             $this->translator->trans(
                                 'from_destination_pim_downloaded_to_destination_pim_installed.on_destination_pim_api_configuration.base_uri.error_message'