diff --git a/src/Model/GServer.php b/src/Model/GServer.php
index e5c1bb3b69..f6c5e14af2 100644
--- a/src/Model/GServer.php
+++ b/src/Model/GServer.php
@@ -918,8 +918,11 @@ class GServer
 			return [];
 		}
 
-		$server = ['detection-method' => self::DETECT_NODEINFO_2,
-			'register_policy' => Register::CLOSED];
+		$server = [
+			'detection-method' => self::DETECT_NODEINFO_2,
+			'register_policy' => Register::CLOSED,
+			'platform' => 'unknown',
+		];
 
 		if (!empty($nodeinfo['openRegistrations'])) {
 			$server['register_policy'] = Register::OPEN;
diff --git a/tests/src/Util/StringsTest.php b/tests/src/Util/StringsTest.php
index 67a8aa259c..830f97b2f2 100644
--- a/tests/src/Util/StringsTest.php
+++ b/tests/src/Util/StringsTest.php
@@ -119,12 +119,12 @@ class StringsTest extends TestCase
 	/**
 	 * Tests if the string is a valid hexadecimal value
 	 *
-	 * @param string $input
-	 * @param bool   $valid
+	 * @param string $input Input string
+	 * @param bool   $valid Whether testing on valid or invalid
 	 *
 	 * @dataProvider dataIsHex
 	 */
-	public function testIsHex(string $input = '', bool $valid = false)
+	public function testIsHex(string $input, bool $valid = false)
 	{
 		self::assertEquals($valid, Strings::isHex($input));
 	}