diff --git a/engines/glk/glk.cpp b/engines/glk/glk.cpp
index f2a796191af..7acf4d3a6af 100644
--- a/engines/glk/glk.cpp
+++ b/engines/glk/glk.cpp
@@ -38,6 +38,7 @@
 #include "glk/screen.h"
 #include "glk/selection.h"
 #include "glk/sound.h"
+#include "glk/speech.h"
 #include "glk/streams.h"
 #include "glk/windows.h"
 
@@ -271,6 +272,8 @@ void GlkEngine::syncSoundSettings() {
 
 	int volume = ConfMan.getBool("sfx_mute") ? 0 : CLIP(ConfMan.getInt("sfx_volume"), 0, 255);
 	_mixer->setVolumeForSoundType(Audio::Mixer::kPlainSoundType, volume);
+
+	SpeechManager::syncSoundSettings();
 }
 
 void GlkEngine::beep() {
diff --git a/engines/glk/speech.cpp b/engines/glk/speech.cpp
index c812a973b16..6707db1bc05 100644
--- a/engines/glk/speech.cpp
+++ b/engines/glk/speech.cpp
@@ -51,6 +51,19 @@ void SpeechManager::releaseSpeechManagerInstance() {
 	}
 }
 
+void SpeechManager::syncSoundSettings() {
+#if defined(USE_TTS)
+	debugC(kDebugSpeech, "SpeechManager::syncSoundSettings");
+	if (_instance && _instance->_ttsMan) {
+		int volume = (ConfMan.getInt("speech_volume") * 100) / 256;
+		if (ConfMan.hasKey("mute") && ConfMan.getBool("mute"))
+			volume = 0;
+		debugC(kDebugSpeech, "Set speech volume to %d", volume);
+		_instance->_ttsMan->setVolume(volume);
+	}
+#endif
+}
+
 SpeechManager::SpeechManager() :
 	_refCount(0)
 #if defined(USE_TTS)
@@ -68,7 +81,7 @@ SpeechManager::SpeechManager() :
 		_ttsMan->setLanguage(ConfMan.get("language"));
 		// Volume
 		int volume = (ConfMan.getInt("speech_volume") * 100) / 256;
-		if (ConfMan.hasKey("mute", "scummvm") && ConfMan.getBool("mute", "scummvm"))
+		if (ConfMan.hasKey("mute") && ConfMan.getBool("mute"))
 			volume = 0;
 		_ttsMan->setVolume(volume);
 		// Voice
diff --git a/engines/glk/speech.h b/engines/glk/speech.h
index 5dfd62809eb..400531dfa9c 100644
--- a/engines/glk/speech.h
+++ b/engines/glk/speech.h
@@ -45,6 +45,8 @@ public:
 	void purgeSpeech(Speech *);
 	void addSpeech(const uint32 *buf, size_t len, Speech *);
 
+	static void syncSoundSettings();
+
 private:
 	SpeechManager();
 	~SpeechManager();