diff --git a/src/OpenConext/EngineBlock/Http/HttpClient.php b/src/OpenConext/EngineBlock/Http/HttpClient.php
index e5fb0c9cb..9a76f7cbe 100644
--- a/src/OpenConext/EngineBlock/Http/HttpClient.php
+++ b/src/OpenConext/EngineBlock/Http/HttpClient.php
@@ -53,7 +53,7 @@ public function read($path, array $parameters = [], array $headers = [])
     {
         $resource = ResourcePathFormatter::format($path, $parameters);
         $response = $this->httpClient->request('GET', $resource, [
-            'exceptions' => false,
+            'http_errors' => false,
             'headers' => $headers
         ]);
         $statusCode = $response->getStatusCode();
@@ -93,7 +93,7 @@ public function post($data, $path, $parameters = [], array $headers = [], bool $
     {
         $resource = ResourcePathFormatter::format($path, $parameters);
         $response = $this->httpClient->request('POST', $resource, [
-            'exceptions' => false,
+            'http_errors' => false,
             'body' => $data,
             'headers' => $headers,
             'verify' => $verify,
diff --git a/tests/unit/OpenConext/EngineBlock/Http/HttpClientTest.php b/tests/unit/OpenConext/EngineBlock/Http/HttpClientTest.php
index 0e8337c52..2002b2c7b 100644
--- a/tests/unit/OpenConext/EngineBlock/Http/HttpClientTest.php
+++ b/tests/unit/OpenConext/EngineBlock/Http/HttpClientTest.php
@@ -40,10 +40,12 @@
 
 use GuzzleHttp\Client;
 use GuzzleHttp\Handler\MockHandler;
+use GuzzleHttp\HandlerStack;
 use GuzzleHttp\Psr7\Response;
 use Mockery\Adapter\Phpunit\MockeryPHPUnitIntegration;
 use OpenConext\EngineBlock\Http\Exception\AccessDeniedException;
 use OpenConext\EngineBlock\Http\Exception\MalformedResponseException;
+use OpenConext\EngineBlock\Http\Exception\UnreadableResourceException;
 use PHPUnit\Framework\Attributes\Group;
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\TestCase;
@@ -196,4 +198,36 @@ public function an_access_denied_exception_is_thrown_if_the_response_status_code
 
         $client->post('post-and-give-me/403', 'Post body');
     }
+
+    #[Group('EngineBlock')]
+    #[Group('Http')]
+    #[Test]
+    public function an_unreadable_resource_exception_is_thrown_if_the_response_status_code_is_400_when_reading()
+    {
+        $mockHandler = new MockHandler([
+            new Response(400, [], '{"error":"Bad Request"}')
+        ]);
+        $guzzle = new Client(['handler' => HandlerStack::create($mockHandler)]);
+        $client = new HttpClient($guzzle);
+
+        $this->expectException(UnreadableResourceException::class);
+
+        $client->read('/some-resource');
+    }
+
+    #[Group('EngineBlock')]
+    #[Group('Http')]
+    #[Test]
+    public function an_unreadable_resource_exception_is_thrown_if_the_response_status_code_is_400_when_posting()
+    {
+        $mockHandler = new MockHandler([
+            new Response(400, [], '{"error":"Bad Request"}')
+        ]);
+        $guzzle = new Client(['handler' => HandlerStack::create($mockHandler)]);
+        $client = new HttpClient($guzzle);
+
+        $this->expectException(UnreadableResourceException::class);
+
+        $client->post('{"id":1}', '/some-resource');
+    }
 }