Index: src/main/java/org/jboss/resteasy/plugins/server/servlet/HttpServletInputMessage.java
===================================================================
--- src/main/java/org/jboss/resteasy/plugins/server/servlet/HttpServletInputMessage.java	(revision 1395)
+++ src/main/java/org/jboss/resteasy/plugins/server/servlet/HttpServletInputMessage.java	(working copy)
@@ -120,13 +120,14 @@
 
    public MultivaluedMap<String, String> getDecodedFormParameters()
    {
+	   if (decodedFormParameters != null) return decodedFormParameters;
       // Tomcat does not set getParameters() if it is a PUT request
       // so pull it out manually
-      if (request.getMethod().equals("PUT"))
+      if ((request.getParameterMap() == null || request.getParameterMap().isEmpty())
+    	      && request.getMethod().equals("PUT"))
       {
          return getPutDecodedFormParameters();
       }
-      if (decodedFormParameters != null) return decodedFormParameters;
       decodedFormParameters = new MultivaluedMapImpl<String, String>();
       Map<String, String[]> params = request.getParameterMap();
       for (Map.Entry<String, String[]> entry : params.entrySet())