diff --git a/src/Internal/CestProvider.php b/src/Internal/CestProvider.php
index 9ff8019..7676916 100644
--- a/src/Internal/CestProvider.php
+++ b/src/Internal/CestProvider.php
@@ -105,8 +105,12 @@ public function getDescriptionHtml(): ?string
         return null;
     }
 
+    /**
+     * @psalm-suppress MixedOperand
+     * @psalm-suppress MixedArgument
+     */
     public function getFullName(): ?string
     {
-        return null;
+        return get_class($this->test->getTestClass()) . "::" . $this->test->getTestMethod();
     }
 }
diff --git a/test/codeception/unit/CestProviderTest.php b/test/codeception/unit/CestProviderTest.php
new file mode 100644
index 0000000..1c6cc7b
--- /dev/null
+++ b/test/codeception/unit/CestProviderTest.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Qameta\Allure\Codeception\Test\Unit;
+
+use Codeception\Test\Cest;
+use Codeception\Test\Unit;
+use Qameta\Allure\Codeception\Internal\CestProvider;
+
+class CestProviderTest extends Unit
+{
+    public function testFullName(): void
+    {
+        $cest = new Cest($this, 'a', 'b');
+        $cestProvider = new CestProvider($cest);
+
+        $this->assertSame(__CLASS__ . '::' . 'a', $cestProvider->getFullName());
+    }
+}