diff --git a/src/System/Query.php b/src/System/Query.php
index 3c061f2..a145a09 100755
--- a/src/System/Query.php
+++ b/src/System/Query.php
@@ -583,8 +583,26 @@ public function getEagerLoads()
      */
     protected function enforceIdColumn($columns)
     {
-        if (!in_array($this->entityMap->getKeyName(), $columns)) {
-            $columns[] = $this->entityMap->getKeyName();
+        $primaryKey = $this->entityMap->getKeyName();
+        $escapedKeyName = preg_quote($primaryKey, '/');
+        $table = $this->entityMap->getTable();
+
+        $match = false;
+
+        foreach ($columns as $column) {
+            if (substr($column, -strlen($primaryKey)) === $primaryKey) {
+                if (strlen($column) === strlen($primaryKey)) {
+                    $match = true;
+                    break;
+                } elseif (preg_match("/\w+\s+(?:(?:(AS|as)\s+)?$escapedKeyName/", $column)) {
+                    $match = true;
+                    break;
+                }
+            }
+        }
+
+        if (!$match) {
+            $columns[] = "$table.$primaryKey AS $primaryKey";
         }
 
         return $columns;
diff --git a/tests/cases/QueryTest.php b/tests/cases/QueryTest.php
index 5df10b8..4d3df5c 100644
--- a/tests/cases/QueryTest.php
+++ b/tests/cases/QueryTest.php
@@ -98,4 +98,22 @@ public function test_pluck()
 
         $this->assertEquals([$blogA->id, $blogB->id], $ids->all());
     }
+
+    public function test_alias()
+    {
+        $user = $this->factoryCreateUid(User::class);
+        /** @var \Analogue\ORM\System\Mapper $userMapper */
+        $userMapper = $this->mapper($user);
+        $userMapper->store($user);
+        $userTable = $userMapper->getEntityMap()->getTable();
+        $primaryKey = $userMapper->getEntityMap()->getKeyName();
+        $this->clearCache();
+
+        $query = $userMapper->getQuery();
+        $query->select(["$userTable.$primaryKey as $primaryKey", 'identity_firstname', 'identity_lastname']);
+        $results = $query->get();
+
+        $this->assertCount(1, $results);
+        $this->assertEquals($user->id, $results->first()->id);
+    }
 }