diff --git a/rt/frontend/jaxrs/src/main/java/org/apache/cxf/jaxrs/utils/FormUtils.java b/rt/frontend/jaxrs/src/main/java/org/apache/cxf/jaxrs/utils/FormUtils.java
index f8443785baa..63dfd24f50f 100644
--- a/rt/frontend/jaxrs/src/main/java/org/apache/cxf/jaxrs/utils/FormUtils.java
+++ b/rt/frontend/jaxrs/src/main/java/org/apache/cxf/jaxrs/utils/FormUtils.java
@@ -306,7 +306,9 @@ private static void checkNumberOfParts(Message m, int numberOfParts) {
     }
 
     public static boolean isFormPostRequest(Message m) {
-        return MediaType.APPLICATION_FORM_URLENCODED.equals(m.get(Message.CONTENT_TYPE))
+        String contentType = (String) m.get(Message.CONTENT_TYPE);
+        return contentType != null
+            && contentType.startsWith(MediaType.APPLICATION_FORM_URLENCODED)
             && HttpMethod.POST.equals(m.get(Message.HTTP_REQUEST_METHOD));
     }
 }