diff --git a/README.markdown b/README.markdown
index 8c0aa69..e3d50fd 100644
--- a/README.markdown
+++ b/README.markdown
@@ -51,9 +51,9 @@ String token = 'YYYYYYYYYYYYYYYYYY';
 TwilioRestClient client = new TwilioRestClient(account, token);
 
 Map<String,String> params = new Map<String,String> {
-        'to'   => '9991231234',
-        'from' => '9991231234',
-        'url'  => 'http://twimlets.com/holdmusic?Bucket=com.twilio.music.ambient'
+        'To'   => '9991231234',
+        'From' => '9991231234',
+        'Url'  => 'http://twimlets.com/holdmusic?Bucket=com.twilio.music.ambient'
     };
 TwilioCall call = client.getAccount().getCalls().create(params);
 ```
@@ -68,9 +68,9 @@ String token = 'YYYYYYYYYYYYYYYYYY';
 TwilioRestClient client = new TwilioRestClient(account, token);
 
 Map<String,String> params = new Map<String,String> {
-        'to'   => '+12316851234',
-        'from' => '+15555555555',
-        'body' => 'Hello there!'
+        'To'   => '+12316851234',
+        'From' => '+15555555555',
+        'Body' => 'Hello there!'
     };
 TwilioSMS sms = client.getAccount().getSMSMessages().create(params);
 ```
diff --git a/docs/quickstart.rst b/docs/quickstart.rst
index 69b7e63..781ea0c 100644
--- a/docs/quickstart.rst
+++ b/docs/quickstart.rst
@@ -18,9 +18,9 @@ This sample calls the `to` phone number and plays music.  The `from` number must
     TwilioRestClient client = new TwilioRestClient(account, token);
     
     Map<String,String> params = new Map<String,String> {
-            'to'   => '9991231234',
-            'from' => '9991231234',
-            'url' => 'http://twimlets.com/holdmusic?Bucket=com.twilio.music.ambient'
+            'To'   => '9991231234',
+            'From' => '9991231234',
+            'Url' => 'http://twimlets.com/holdmusic?Bucket=com.twilio.music.ambient'
         };
     TwilioCall call = client.getAccount().getCalls().create(params);
 
@@ -36,9 +36,9 @@ This sample texts *Hello there!* to the `to` phone number.  The `from` number mu
     TwilioRestClient client = new TwilioRestClient(account, token);
     
     Map<String,String> params = new Map<String,String> {
-            'to'   => '+12316851234',
-            'from' => '+15555555555',
-            'body' => 'Hello there!'
+            'To'   => '+12316851234',
+            'From' => '+15555555555',
+            'Body' => 'Hello there!'
         };
     TwilioSMS sms = client.getAccount().getSMSMessages().create(params);
 
diff --git a/docs/usage/phone-calls.rst b/docs/usage/phone-calls.rst
index 3365c51..0ce4169 100755
--- a/docs/usage/phone-calls.rst
+++ b/docs/usage/phone-calls.rst
@@ -19,9 +19,9 @@ can be successfully started, you'll need a url which outputs valid `TwiML
     TwilioRestClient client = new TwilioRestClient(ACCOUNT_SID, AUTH_TOKEN);
     
     Map<String,String> params = new Map<String,String>() {
-			'to' => '9991231234',
-			'from' => '9991231234',
-			'url' => 'http://foo.com/call.xml'
+			'To' => '9991231234',
+			'From' => '9991231234',
+			'Url' => 'http://foo.com/call.xml'
 		};
     
     TwilioCall call = client.getAccount().getCalls().create(params);