diff --git a/tests/client002.phpt b/tests/client002.phpt
index d020f16e..8849ae94 100644
--- a/tests/client002.phpt
+++ b/tests/client002.phpt
@@ -15,7 +15,7 @@ echo "Test\n";
 class Observer implements SplObserver
 {
 	#[ReturnTypeWillChange]
-	function update(SplSubject $client, http\Client\Request $request = null, StdClass $progress = null) {
+	function update(SplSubject $client, ?http\Client\Request $request = null, ?StdClass $progress = null) {
 		echo "P";
 		/* fence against buggy infof() calls in some curl versions */
 		$compare = $client->getProgressInfo($request);
diff --git a/tests/client028.phpt b/tests/client028.phpt
index f14fb8e5..58adc685 100644
--- a/tests/client028.phpt
+++ b/tests/client028.phpt
@@ -80,7 +80,7 @@ class UserHandler implements http\Client\Curl\User
 		return count($this->client);
 	}
 	
-	function wait(int $timeout_ms = null) {
+	function wait(?int $timeout_ms = null) {
 		echo "W";
 		
 		if ($timeout_ms === null) {
diff --git a/tests/info002.phpt b/tests/info002.phpt
index 4d034403..44172b8d 100644
--- a/tests/info002.phpt
+++ b/tests/info002.phpt
@@ -37,13 +37,13 @@ Test
 http\Exception\BadMessageException: http\Message::__construct(): Failed to parse headers: unexpected character '\057' at pos 4 of 'HTTP/1.1 99 Apples in my Basket' in %sinfo002.php:%d
 Stack trace:
 #0 %sinfo002.php(%d): http\Message->__construct('HTTP/1.1 99 App...')
-#1 %sinfo002.php(%d): {closure}()
+#1 %sinfo002.php(%d): {closur%s}()
 #2 %sinfo002.php(%d): trap(Object(Closure))
 #3 {main}
 http\Exception\BadMessageException: http\Message::__construct(): Failed to parse headers: unexpected character '\040' at pos 7 of 'CONNECT HTTP/1.1' in %sinfo002.php:%d
 Stack trace:
 #0 %sinfo002.php(%d): http\Message->__construct('CONNECT HTTP/1....')
-#1 %sinfo002.php(%d): {closure}()
+#1 %sinfo002.php(%d): {closur%s}()
 #2 %sinfo002.php(%d): trap(Object(Closure))
 #3 {main}
 HTTP/1.1 200