diff --git a/mimic3-http/mimic3_http/swagger.yaml b/mimic3-http/mimic3_http/swagger.yaml
index 35d9c69..8351b03 100644
--- a/mimic3-http/mimic3_http/swagger.yaml
+++ b/mimic3-http/mimic3_http/swagger.yaml
@@ -13,13 +13,6 @@ paths:
     get:
       summary: 'Speak text to WAV'
       parameters:
-        - in: query
-          name: voice
-          required: true
-          description: 'Voice in the form <lang>/<name>_<quality> optional with #<speaker> at the end'
-          schema:
-            type: string
-            example: 'en_UK/apope_low'
         - in: query
           name: text
           required: true
@@ -27,6 +20,84 @@ paths:
           schema:
             type: string
             example: 'Welcome to the world of speech synthesis!'
+        - in: query
+          name: voice
+          description: 'Voice in the form <lang>/<name>_<quality> optional with #<speaker> at the end'
+          schema:
+            type: string
+            example: 'en_UK/apope_low'
+        - in: query
+          name: noiseScale
+          description: 'Volatility of speaker (0-1, default: 0.667)'
+          schema:
+            type: number
+            example: 0.667
+        - in: query
+          name: noiseW
+          description: 'Volatility of individual phonemes (0-1, default: 0.667)'
+          schema:
+            type: number
+            example: 0.8
+        - in: query
+          name: lengthScale
+          description: 'Speed of speaker (default: 1.0, faster &lt; 1 &lt; slower)'
+          schema:
+            type: number
+            example: 1.0
+        - in: query
+          name: ssml
+          description: 'Input text is SSML'
+          schema:
+            type: boolean
+            example: false
+      produces:
+        - audio/wav
+      responses:
+        '200':
+          description: audio
+          schema:
+            type: binary
+    post:
+      summary: 'Speak text to WAV'
+      requestBody:
+        required: true
+        description: 'Text to speak'
+        content:
+          text/plain:
+            schema:
+              type: string
+              example: 'Welcome to the world of speech synthesis!'
+      parameters:
+        - in: query
+          name: voice
+          description: 'Voice in the form <lang>/<name>_<quality> optional with #<speaker> at the end'
+          schema:
+            type: string
+            example: 'en_UK/apope_low'
+        - in: query
+          name: noiseScale
+          description: 'Volatility of speaker (0-1, default: 0.667)'
+          schema:
+            type: number
+            example: 0.667
+        - in: query
+          name: noiseW
+          description: 'Volatility of individual phonemes (0-1, default: 0.667)'
+          schema:
+            type: number
+            example: 0.8
+        - in: query
+          name: lengthScale
+          description: 'Speed of speaker (default: 1.0, faster &lt; 1 &lt; slower)'
+          schema:
+            type: number
+            example: 1.0
+        - in: query
+          name: ssml
+          description: 'Input text is SSML'
+          schema:
+            type: boolean
+            example: false
       produces:
         - audio/wav
       responses:
diff --git a/mimic3-http/mimic3_http/templates/index.html b/mimic3-http/mimic3_http/templates/index.html
index cc6a02f..bc51555 100644
--- a/mimic3-http/mimic3_http/templates/index.html
+++ b/mimic3-http/mimic3_http/templates/index.html
@@ -90,12 +90,6 @@
                     <input type="number" id="length-scale" name="lengthScale" size="5" min="0" step="0.001" value="1">
                 </div>
             </div>
-            <div class="row mt-3">
-                <div class="col-auto">
-                    <label for="text-language" title="Text Language">Text Language:</label>
-                    <input type="text" id="text-language" name="textLanguage" size="8" placeholder="lang code">
-                </div>
-            </div>
             <hr class="mt-5" />
             <div class="row mt-5 justify-content-center">
               <a href="https://mycroft.ai" title="Mycroft AI">
@@ -142,7 +136,6 @@
                  voice = voice + "#" + speaker
              }
 
-             var textLanguage = q('#text-language').value || ''
              var ssml = q('#ssml').value || 'false'
 
              q('#audio-message').hidden = false
@@ -155,8 +148,7 @@
                  '&noiseScale=' + encodeURIComponent(noiseScale) +
                  '&noiseW=' + encodeURIComponent(noiseW) +
                  '&lengthScale=' + encodeURIComponent(lengthScale) +
-                 '&ssml=' + encodeURIComponent(ssml) +
-                 '&textLanguage=' + encodeURIComponent(textLanguage),
+                 '&ssml=' + encodeURIComponent(ssml),
                  {cache: 'no-cache'})
 
              if (res.ok) {