diff --git a/scripts/mysql.sql b/scripts/mysql.sql
index 79cda80..6c61426 100644
--- a/scripts/mysql.sql
+++ b/scripts/mysql.sql
@@ -34,7 +34,6 @@ CREATE TABLE galette_activities_subscriptions (
   end_date date NOT NULL,
   comment text,
   PRIMARY KEY (id_subscription),
-  UNIQUE KEY (id_activity, id_adh),
   FOREIGN KEY (id_activity) REFERENCES galette_activities_activities (id_activity) ON DELETE CASCADE ON UPDATE CASCADE,
   FOREIGN KEY (id_adh) REFERENCES galette_adherents (id_adh) ON DELETE CASCADE ON UPDATE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;
diff --git a/scripts/pgsql.sql b/scripts/pgsql.sql
index ad326fe..5e7cd3f 100644
--- a/scripts/pgsql.sql
+++ b/scripts/pgsql.sql
@@ -46,6 +46,5 @@ CREATE TABLE galette_activities_subscriptions (
   subscription_date date NOT NULL,
   end_date date NOT NULL,
   comment text,
-  PRIMARY KEY (id_subscription),
-  UNIQUE (id_activity, id_adh)
+  PRIMARY KEY (id_subscription)
 );
diff --git a/tests/GaletteActivities/Entity/tests/units/Subscription.php b/tests/GaletteActivities/Entity/tests/units/Subscription.php
index f160082..695b83d 100644
--- a/tests/GaletteActivities/Entity/tests/units/Subscription.php
+++ b/tests/GaletteActivities/Entity/tests/units/Subscription.php
@@ -247,6 +247,19 @@ public function testCrud(): void
         $member_one->loadGroups();
         $groups = $member_one->getGroups();
         $this->assertCount(1, $groups);
+
+        //no duplicate on subscriptions
+        $subscription = new \GaletteActivities\Entity\Subscription($this->zdb);
+        $data = [
+            'activity' => $gactivity_id,
+            'member' => $member_one->id,
+            'subscription_date' => (new \DateTime())->format('Y-m-d'),
+            'end_date' => (new \DateTime())->modify('+1 year')->format('Y-m-d'),
+            'comment' => 'Comment ' . $this->seed,
+        ];
+        $this->assertTrue($subscription->check($data));
+        $this->assertTrue($subscription->store());
+
     }
 
     /**