diff --git a/integration/jetty/jetty8.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java b/integration/jetty/jetty8.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
index 82ae807e2b..104acb35b0 100755
--- a/integration/jetty/jetty8.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
+++ b/integration/jetty/jetty8.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
@@ -47,6 +47,7 @@ public class JettySessionTokenStore extends AbstractJettySessionTokenStore {
                     myRequest.setMethod(method);
                     MultivaluedHashMap<String, String> j_post = (MultivaluedHashMap<String, String>) session.getAttribute(CACHED_FORM_PARAMETERS);
                     if (j_post != null) {
+                        myRequest.setContentType("application/x-www-form-urlencoded");
                         MultiMap<String> map = new MultiMap<String>();
                         for (String key : j_post.keySet()) {
                             for (String val : j_post.getList(key)) {
diff --git a/integration/jetty/jetty9.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java b/integration/jetty/jetty9.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
index b9707e45ca..5b28ae37e2 100755
--- a/integration/jetty/jetty9.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
+++ b/integration/jetty/jetty9.1/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
@@ -48,6 +48,7 @@ public class JettySessionTokenStore extends AbstractJettySessionTokenStore {
                     myRequest.setMethod(HttpMethod.valueOf(method.toUpperCase()), method);
                     MultivaluedHashMap<String, String> j_post = (MultivaluedHashMap<String, String>) session.getAttribute(CACHED_FORM_PARAMETERS);
                     if (j_post != null) {
+                        myRequest.setContentType("application/x-www-form-urlencoded");
                         MultiMap<String> map = new MultiMap<String>();
                         for (String key : j_post.keySet()) {
                             for (String val : j_post.getList(key)) {
diff --git a/integration/jetty/jetty9.2/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java b/integration/jetty/jetty9.2/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
index 2f46975b53..497426af56 100755
--- a/integration/jetty/jetty9.2/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
+++ b/integration/jetty/jetty9.2/src/main/java/org/keycloak/adapters/jetty/JettySessionTokenStore.java
@@ -48,6 +48,7 @@ public class JettySessionTokenStore extends AbstractJettySessionTokenStore {
                     myRequest.setMethod(HttpMethod.valueOf(method.toUpperCase()), method);
                     MultivaluedHashMap<String, String> j_post = (MultivaluedHashMap<String, String>) session.getAttribute(CACHED_FORM_PARAMETERS);
                     if (j_post != null) {
+                        myRequest.setContentType("application/x-www-form-urlencoded");
                         MultiMap<String> map = new MultiMap<String>();
                         for (String key : j_post.keySet()) {
                             for (String val : j_post.getList(key)) {