diff --git a/src/main/java/com/eactive/eai/adapter/service/ApiAdapterService.java b/src/main/java/com/eactive/eai/adapter/service/ApiAdapterService.java
index 14acfa9..e831d91 100644
--- a/src/main/java/com/eactive/eai/adapter/service/ApiAdapterService.java
+++ b/src/main/java/com/eactive/eai/adapter/service/ApiAdapterService.java
@@ -151,7 +151,7 @@ public class ApiAdapterService extends HttpAdapterServiceSupport {
             case PUT:
                 if (StringUtils.contains(request.getContentType(), "application/x-www-form-urlencoded")) {
                     isParameterType = true;
-                } else if (request.getContentType() == null || request.getContentType().isEmpty()) {  // jwhong
+                } else if ( StringUtils.isNoneBlank(request.getQueryString()) )  { // jwhong
                 	isParameterType = true;
                 } else {
                     isParameterType = false;