diff --git a/src/Symfony/Component/BrowserKit/AbstractBrowser.php b/src/Symfony/Component/BrowserKit/AbstractBrowser.php
index a43f434c7033..41383c3a0351 100644
--- a/src/Symfony/Component/BrowserKit/AbstractBrowser.php
+++ b/src/Symfony/Component/BrowserKit/AbstractBrowser.php
@@ -166,16 +166,42 @@ public function xmlHttpRequest(string $method, string $uri, array $parameters =
      */
     public function jsonRequest(string $method, string $uri, array $parameters = [], array $server = [], bool $changeHistory = true): Crawler
     {
-        $content = json_encode($parameters);
+        // Based on https://github.com/symfony/symfony/blob/v5.2.0/src/Symfony/Component/HttpFoundation/Request.php#L388-L404
+        // the logic in symfony/http-foundation we convert parameters to json content.
+        switch (strtoupper($method)) {
+            case 'POST':
+            case 'PUT':
+            case 'DELETE':
+            case 'PATCH':
+                $content = json_encode($parameters);
+                $query = [];
+                break;
+            default:
+                $content = null;
+                $query = $parameters;
+                break;
+        }
+
+        $serverContentType = $this->getServerParameter('CONTENT_TYPE', null);
+        $serverHttpAccept = $this->getServerParameter('HTTP_ACCEPT', null);
 
         $this->setServerParameter('CONTENT_TYPE', 'application/json');
         $this->setServerParameter('HTTP_ACCEPT', 'application/json');
 
         try {
-            return $this->request($method, $uri, [], [], $server, $content, $changeHistory);
+            return $this->request($method, $uri, $query, [], $server, $content, $changeHistory);
         } finally {
-            unset($this->server['CONTENT_TYPE']);
-            unset($this->server['HTTP_ACCEPT']);
+            if (null === $serverContentType) {
+                unset($this->server['CONTENT_TYPE']);
+            } else {
+                $this->setServerParameter('CONTENT_TYPE', $serverContentType);
+            }
+
+            if (null === $serverHttpAccept) {
+                unset($this->server['HTTP_ACCEPT']);
+            } else {
+                $this->setServerParameter('HTTP_ACCEPT', $serverHttpAccept);
+            }
         }
     }
 
diff --git a/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php b/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php
index 120286cf0dda..effca8ed8dec 100644
--- a/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/AbstractBrowserTest.php
@@ -63,7 +63,7 @@ public function testXmlHttpRequest()
     public function testJsonRequest()
     {
         $client = $this->getBrowser();
-        $client->jsonRequest('GET', 'http://example.com/', ['param' => 1], [], true);
+        $client->jsonRequest('POST', 'http://example.com/', ['param' => 1], [], true);
         $this->assertSame('application/json', $client->getRequest()->getServer()['CONTENT_TYPE']);
         $this->assertSame('application/json', $client->getRequest()->getServer()['HTTP_ACCEPT']);
         $this->assertFalse($client->getServerParameter('CONTENT_TYPE', false));
@@ -71,6 +71,28 @@ public function testJsonRequest()
         $this->assertSame('{"param":1}', $client->getRequest()->getContent());
     }
 
+    public function testJsonRequestPredefinedServerVariables()
+    {
+        $client = $this->getBrowser(['HTTP_ACCEPT' => 'application/xml', 'CONTENT_TYPE' => 'application/xml']);
+        $client->jsonRequest('POST', 'http://example.com/', ['param' => 1], [], true);
+        $this->assertSame('application/json', $client->getRequest()->getServer()['CONTENT_TYPE']);
+        $this->assertSame('application/json', $client->getRequest()->getServer()['HTTP_ACCEPT']);
+        $this->assertSame('application/xml', $client->getServerParameter('HTTP_ACCEPT'));
+        $this->assertSame('application/xml', $client->getServerParameter('CONTENT_TYPE'));
+    }
+
+    public function testJsonRequestGet()
+    {
+        $client = $this->getBrowser();
+        $client->jsonRequest('GET', 'http://example.com/', ['param' => 1], [], true);
+        $this->assertSame('application/json', $client->getRequest()->getServer()['CONTENT_TYPE']);
+        $this->assertSame('application/json', $client->getRequest()->getServer()['HTTP_ACCEPT']);
+        $this->assertFalse($client->getServerParameter('CONTENT_TYPE', false));
+        $this->assertFalse($client->getServerParameter('HTTP_ACCEPT', false));
+        $this->assertNull($client->getRequest()->getContent());
+        $this->assertSame(['param' => '1'], $client->getRequest()->getParameters());
+    }
+
     public function testGetRequestWithIpAsHttpHost()
     {
         $client = $this->getBrowser();