diff --git a/components/camel-http/src/main/java/org/apache/camel/component/http/OAuth2ClientConfigurer.java b/components/camel-http/src/main/java/org/apache/camel/component/http/OAuth2ClientConfigurer.java
index cceba3c213095..f80cdf18bca1d 100644
--- a/components/camel-http/src/main/java/org/apache/camel/component/http/OAuth2ClientConfigurer.java
+++ b/components/camel-http/src/main/java/org/apache/camel/component/http/OAuth2ClientConfigurer.java
@@ -61,7 +61,7 @@ public void configureHttpClient(HttpClientBuilder clientBuilder) {
 
                     if (response.getCode() == 200) {
                         String accessToken = ((JsonObject) Jsoner.deserialize(responseString)).getString("access_token");
-                        request.addHeader(HttpHeaders.AUTHORIZATION, "Bearer " + accessToken);
+                        request.setHeader(HttpHeaders.AUTHORIZATION, "Bearer " + accessToken);
                     } else {
                         throw new HttpException(
                                 "Received error response from token request with Status Code: " + response.getCode());