diff --git a/src/main/java/com/eactive/eai/authoutbound/client/impl/HttpClientAccessTokenServiceWithBase64NiceOn.java b/src/main/java/com/eactive/eai/authoutbound/client/impl/HttpClientAccessTokenServiceWithBase64NiceOn.java
index e694f6f..8c4a102 100644
--- a/src/main/java/com/eactive/eai/authoutbound/client/impl/HttpClientAccessTokenServiceWithBase64NiceOn.java
+++ b/src/main/java/com/eactive/eai/authoutbound/client/impl/HttpClientAccessTokenServiceWithBase64NiceOn.java
@@ -201,7 +201,7 @@ public class HttpClientAccessTokenServiceWithBase64NiceOn implements HttpClientA
 			HttpPost httpPost = new HttpPost(uri);
 			//httpPost.setEntity(new UrlEncodedFormEntity(formParams, charset));
 			httpPost.setEntity(new StringEntity(postParameters, StandardCharsets.UTF_8));
-			httpPost.setHeader("Content-Type", contentType+" charset=" + encode);
+			httpPost.setHeader("Content-Type", contentType+";charset=" + encode);
 
 			//HTTP HEADER에 client id, client secret를 base64Encode 한 후 추가
 			String cId = oAuthCredentialVo.getClientId();