diff --git a/src/FioApi/Transaction.php b/src/FioApi/Transaction.php
index 261d8e2..7abe1e1 100644
--- a/src/FioApi/Transaction.php
+++ b/src/FioApi/Transaction.php
@@ -51,6 +51,9 @@ class Transaction
     /** @var string */
     protected $paymentOrderId;
 
+    /** @var string */
+    protected $specification;
+
     protected function __construct(
         $id,
         $date,
@@ -67,7 +70,8 @@ protected function __construct(
         $transactionType,
         $performedBy,
         $comment,
-        $paymentOrderId
+        $paymentOrderId,
+        $specification
     ) {
         $this->id = $id;
         $this->date = $date;
@@ -85,6 +89,7 @@ protected function __construct(
         $this->performedBy = $performedBy;
         $this->comment = $comment;
         $this->paymentOrderId = $paymentOrderId;
+        $this->specification = $specification;
     }
 
     /**
@@ -109,7 +114,8 @@ public static function create(\stdClass $data)
             $data->column8->value, //Typ
             !empty($data->column9) ? $data->column9->value : null, //Provedl
             !empty($data->column25) ? $data->column25->value : null, //Komentář
-            !empty($data->column17) ? $data->column17->value : null //ID pokynu
+            !empty($data->column17) ? $data->column17->value : null, //ID pokynu
+            !empty($data->column18) ? $data->column18->value : null //Upřesnění
         );
     }
 
@@ -240,4 +246,12 @@ public function getPaymentOrderId()
     {
         return $this->paymentOrderId;
     }
+
+    /**
+     * @return string
+     */
+    public function getSpecification()
+    {
+        return $this->specification;
+    }
 }
diff --git a/tests/FioApi/TransactionTest.php b/tests/FioApi/TransactionTest.php
index ef801ee..c4c5b46 100644
--- a/tests/FioApi/TransactionTest.php
+++ b/tests/FioApi/TransactionTest.php
@@ -26,5 +26,6 @@ public function testAccountValuesAreProperlySet()
         $this->assertSame(null, $transaction->getPerformedBy());
         $this->assertSame('Comment? Comment!', $transaction->getComment());
         $this->assertSame(1111122222, $transaction->getPaymentOrderId());
+        $this->assertSame('1500.00 EUR', $transaction->getSpecification());
     }
 }
diff --git a/tests/FioApi/data/example-transaction.json b/tests/FioApi/data/example-transaction.json
index 45ac2f2..a9ca176 100644
--- a/tests/FioApi/data/example-transaction.json
+++ b/tests/FioApi/data/example-transaction.json
@@ -58,7 +58,11 @@
     "id": 8
   },
   "column9": null,
-  "column18": null,
+  "column18": {
+    "value": "1500.00 EUR",
+    "name": "Upřesnění",
+    "id": 18
+  },
   "column25": {
     "value": "Comment? Comment!",
     "name": "Komentář",