diff --git a/tests/components/marytts/test_tts.py b/tests/components/marytts/test_tts.py
index da221a7effd..b5681460b75 100644
--- a/tests/components/marytts/test_tts.py
+++ b/tests/components/marytts/test_tts.py
@@ -2,7 +2,6 @@
 import asyncio
 import os
 import shutil
-from urllib.parse import urlencode
 
 from homeassistant.components.media_player.const import (
     ATTR_MEDIA_CONTENT_ID,
@@ -11,10 +10,9 @@ from homeassistant.components.media_player.const import (
 )
 import homeassistant.components.tts as tts
 from homeassistant.config import async_process_ha_core_config
-from homeassistant.const import HTTP_INTERNAL_SERVER_ERROR
 from homeassistant.setup import setup_component
 
-from tests.async_mock import Mock, patch
+from tests.async_mock import patch
 from tests.common import assert_setup_component, get_test_home_assistant, mock_service
 
 
@@ -62,18 +60,15 @@ class TestTTSMaryTTSPlatform:
         """Test service call say."""
         calls = mock_service(self.hass, DOMAIN_MP, SERVICE_PLAY_MEDIA)
 
-        conn = Mock()
-        response = Mock()
-        conn.getresponse.return_value = response
-        response.status = 200
-        response.read.return_value = b"audio"
-
         config = {tts.DOMAIN: {"platform": "marytts"}}
 
         with assert_setup_component(1, tts.DOMAIN):
             setup_component(self.hass, tts.DOMAIN, config)
 
-        with patch("http.client.HTTPConnection", return_value=conn):
+        with patch(
+            "homeassistant.components.marytts.tts.MaryTTS.speak",
+            return_value=b"audio",
+        ) as mock_speak:
             self.hass.services.call(
                 tts.DOMAIN,
                 "marytts_say",
@@ -86,18 +81,14 @@ class TestTTSMaryTTSPlatform:
 
         assert len(calls) == 1
         assert calls[0].data[ATTR_MEDIA_CONTENT_ID].find(".wav") != -1
-        conn.request.assert_called_with("POST", "/process", urlencode(self.params))
+
+        mock_speak.assert_called_once()
+        mock_speak.assert_called_with("HomeAssistant", {})
 
     def test_service_say_with_effect(self):
         """Test service call say with effects."""
         calls = mock_service(self.hass, DOMAIN_MP, SERVICE_PLAY_MEDIA)
 
-        conn = Mock()
-        response = Mock()
-        conn.getresponse.return_value = response
-        response.status = 200
-        response.read.return_value = b"audio"
-
         config = {
             tts.DOMAIN: {"platform": "marytts", "effect": {"Volume": "amount:2.0;"}}
         }
@@ -105,7 +96,10 @@ class TestTTSMaryTTSPlatform:
         with assert_setup_component(1, tts.DOMAIN):
             setup_component(self.hass, tts.DOMAIN, config)
 
-        with patch("http.client.HTTPConnection", return_value=conn):
+        with patch(
+            "homeassistant.components.marytts.tts.MaryTTS.speak",
+            return_value=b"audio",
+        ) as mock_speak:
             self.hass.services.call(
                 tts.DOMAIN,
                 "marytts_say",
@@ -119,28 +113,22 @@ class TestTTSMaryTTSPlatform:
         assert len(calls) == 1
         assert calls[0].data[ATTR_MEDIA_CONTENT_ID].find(".wav") != -1
 
-        self.params.update(
-            {"effect_Volume_selected": "on", "effect_Volume_parameters": "amount:2.0;"}
-        )
-        conn.request.assert_called_with("POST", "/process", urlencode(self.params))
+        mock_speak.assert_called_once()
+        mock_speak.assert_called_with("HomeAssistant", {"Volume": "amount:2.0;"})
 
     def test_service_say_http_error(self):
         """Test service call say."""
         calls = mock_service(self.hass, DOMAIN_MP, SERVICE_PLAY_MEDIA)
 
-        conn = Mock()
-        response = Mock()
-        conn.getresponse.return_value = response
-        response.status = HTTP_INTERNAL_SERVER_ERROR
-        response.reason = "test"
-        response.readline.return_value = "content"
-
         config = {tts.DOMAIN: {"platform": "marytts"}}
 
         with assert_setup_component(1, tts.DOMAIN):
             setup_component(self.hass, tts.DOMAIN, config)
 
-        with patch("http.client.HTTPConnection", return_value=conn):
+        with patch(
+            "homeassistant.components.marytts.tts.MaryTTS.speak",
+            side_effect=Exception(),
+        ) as mock_speak:
             self.hass.services.call(
                 tts.DOMAIN,
                 "marytts_say",
@@ -152,4 +140,5 @@ class TestTTSMaryTTSPlatform:
         self.hass.block_till_done()
 
         assert len(calls) == 0
-        conn.request.assert_called_with("POST", "/process", urlencode(self.params))
+
+        mock_speak.assert_called_once()