diff --git a/src/fenrir-package/speech/espeak.py b/src/fenrir-package/speech/espeak.py
index 0ec32693..472d6eb5 100644
--- a/src/fenrir-package/speech/espeak.py
+++ b/src/fenrir-package/speech/espeak.py
@@ -27,6 +27,9 @@ class speech():
         self._es.cancel()
         return True
 
+    def setCallback(self, callback)
+        pass
+
     def clear_buffer(self):
         if not self._isInitialized:
             return False