diff --git a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/H2AsyncClientBuilder.java b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/H2AsyncClientBuilder.java
index 68bdd465f2..5b0e7e9566 100644
--- a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/H2AsyncClientBuilder.java
+++ b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/H2AsyncClientBuilder.java
@@ -684,11 +684,11 @@ public CloseableHttpAsyncClient build() {
             }
         }
         b.addAll(
+                new H2RequestTargetHost(),
                 new RequestDefaultHeaders(defaultHeaders),
                 new RequestUserAgent(userAgentCopy),
                 new RequestExpectContinue(),
                 new H2RequestContent(),
-                new H2RequestTargetHost(),
                 new H2RequestConnControl());
         if (!cookieManagementDisabled) {
             b.add(RequestAddCookies.INSTANCE);
diff --git a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClientBuilder.java b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClientBuilder.java
index 346d315c8e..673dbbf097 100644
--- a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClientBuilder.java
+++ b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClientBuilder.java
@@ -832,11 +832,11 @@ public CloseableHttpAsyncClient build() {
             }
         }
         b.addAll(
+                new H2RequestTargetHost(),
                 new RequestDefaultHeaders(defaultHeaders),
                 new RequestUserAgent(userAgentCopy),
                 new RequestExpectContinue(),
                 new H2RequestContent(),
-                new H2RequestTargetHost(),
                 new H2RequestConnControl());
         if (!cookieManagementDisabled) {
             b.add(RequestAddCookies.INSTANCE);
diff --git a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClients.java b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClients.java
index cb0d1e2cf1..cfe292dd1b 100644
--- a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClients.java
+++ b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClients.java
@@ -113,8 +113,8 @@ public static CloseableHttpAsyncClient createHttp2System() {
 
     private static HttpProcessor createMinimalProtocolProcessor() {
         return new DefaultHttpProcessor(
-                new H2RequestContent(),
                 new H2RequestTargetHost(),
+                new H2RequestContent(),
                 new H2RequestConnControl(),
                 new RequestUserAgent(VersionInfo.getSoftwareInfo(
                         "Apache-HttpAsyncClient", "org.apache.hc.client5", HttpAsyncClients.class)));