diff --git a/Tools/speech/GSSpeechSynthesizer.m b/Tools/speech/GSSpeechSynthesizer.m
index d7e2cce56..088a6eb33 100644
--- a/Tools/speech/GSSpeechSynthesizer.m
+++ b/Tools/speech/GSSpeechSynthesizer.m
@@ -129,7 +129,7 @@ static int clients;
   if (clients == 0)
     {
       [NSTimer scheduledTimerWithTimeInterval: 600
-                                       target: object_getClass()
+                                       target: object_getClass(self)
                                      selector: @selector(exitIfUnneeded:)
                                      userInfo: nil
                                       repeats: NO];