diff --git a/src/testcase/twitter/OAuthHeader.java b/src/testcase/twitter/OAuthHeader.java
index 85f20e0..c06f144 100644
--- a/src/testcase/twitter/OAuthHeader.java
+++ b/src/testcase/twitter/OAuthHeader.java
@@ -13,8 +13,8 @@
 import sun.misc.BASE64Encoder;
 
 public class OAuthHeader {
-	private String consumer_key;
-	private String consumer_secret;
+	private String consumer_key = "";
+	private String consumer_secret = "";
 	private String oauth_token = "";
 	private String oauth_secret = "";
 	private String method = "POST";