diff --git a/src/Symfony/Component/HttpClient/CurlHttpClient.php b/src/Symfony/Component/HttpClient/CurlHttpClient.php
index ae82703ec1187..0218841280d5d 100644
--- a/src/Symfony/Component/HttpClient/CurlHttpClient.php
+++ b/src/Symfony/Component/HttpClient/CurlHttpClient.php
@@ -138,12 +138,12 @@ public function request(string $method, string $url, array $options = []): Respo
             CURLOPT_CERTINFO => $options['capture_peer_cert_chain'],
         ];
 
-        if (\defined('CURL_VERSION_HTTP2') && (CURL_VERSION_HTTP2 & self::$curlVersion['features']) && ('https:' === $scheme || 2.0 === (float) $options['http_version'])) {
+        if (\defined('CURL_VERSION_HTTP2') && (CURL_VERSION_HTTP2 & self::$curlVersion['features']) && (('https:' === $scheme && null === $options['http_version']) || 2.0 === (float) $options['http_version'])) {
             $curlopts[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_2_0;
+        } elseif (('http:' === $scheme && null === $options['http_version']) || 1.1 === (float) $options['http_version']) {
+            $curlopts[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_1_1;
         } elseif (1.0 === (float) $options['http_version']) {
             $curlopts[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_1_0;
-        } elseif (1.1 === (float) $options['http_version']) {
-            $curlopts[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_1_1;
         }
 
         if (isset($options['auth_ntlm'])) {