diff --git a/t/lib-httpd/apache.conf b/t/lib-httpd/apache.conf
index 0294739a77..6d5d66caf8 100644
--- a/t/lib-httpd/apache.conf
+++ b/t/lib-httpd/apache.conf
@@ -31,7 +31,7 @@ ErrorLog error.log
 
 <IfDefine HTTP2>
 LoadModule http2_module modules/mod_http2.so
-Protocols h2c
+Protocols h2 h2c
 </IfDefine>
 
 <IfVersion < 2.4>