diff --git a/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/config/config.xml b/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/config/config.xml
index 2dd2b66666e97..581fd450e0e1f 100644
--- a/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/config/config.xml
+++ b/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/config/config.xml
@@ -14,7 +14,7 @@
 			<description>Configure Text to Speech.</description>
 		</parameter-group>
 		<parameter name="apiKey" type="text" required="true" groupName="authentication">
-			<label>API key</label>
+			<label>API Key</label>
 			<required>true</required>
 			<description>OpenAI API key.</description>
 			<context>password</context>
diff --git a/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/i18n/openaitts.properties b/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/i18n/openaitts.properties
index 02e8a78665094..a66ca6fff71b2 100644
--- a/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/i18n/openaitts.properties
+++ b/bundles/org.openhab.voice.openaitts/src/main/resources/OH-INF/i18n/openaitts.properties
@@ -2,3 +2,16 @@
 
 addon.openaitts.name = OpenAI Text-to-Speech
 addon.openaitts.description = OpenAI TTS Service provides text-to-speech capabilities for openHAB.
+
+voice.config.openaitts.apiKey.label = API Key
+voice.config.openaitts.apiKey.description = OpenAI API key.
+voice.config.openaitts.apiUrl.label = API URL
+voice.config.openaitts.apiUrl.description = TTS host API URL.
+voice.config.openaitts.group.authentication.label = Authentication
+voice.config.openaitts.group.authentication.description = Authentication for connecting to OpenAI API.
+voice.config.openaitts.group.tts.label = TTS Configuration
+voice.config.openaitts.group.tts.description = Configure Text to Speech.
+voice.config.openaitts.model.label = Model
+voice.config.openaitts.model.description = ID of the model to use.
+voice.config.openaitts.speed.label = Speed
+voice.config.openaitts.speed.description = The speed of the generated audio. Select a value from 0.25 to 4.0.