1 files changed, 1 insertions, 1 deletions

diff --git a/utils/rbutilqt/base/ttscarbon.cpp b/utils/rbutilqt/base/ttscarbon.cpp
index 2d9fa49dbe..6b20de764f 100644
--- a/utils/rbutilqt/base/ttscarbon.cpp
+++ b/utils/rbutilqt/base/ttscarbon.cpp
@@ -171,7 +171,7 @@ void TTSCarbon::saveSettings(void)
 
 /** @brief create wav file from text using the selected TTS voice.
   */
-TTSStatus TTSCarbon::voice(QString text, QString wavfile, QString* errStr)
+TTSStatus TTSCarbon::voice(const QString& text, const QString& wavfile, QString* errStr)
 {
     TTSStatus status = NoError;
     OSErr error;