diff --git a/include/soundtrigger/ISoundTrigger.h b/include/soundtrigger/ISoundTrigger.h
index ea1aea6..c357caa 100644
--- a/include/soundtrigger/ISoundTrigger.h
+++ b/include/soundtrigger/ISoundTrigger.h
@@ -40,8 +40,7 @@
     virtual status_t startRecognition(sound_model_handle_t handle,
                                       const sp<IMemory>& dataMemory) = 0;
     virtual status_t stopRecognition(sound_model_handle_t handle) = 0;
-    virtual status_t getModelState(sound_model_handle_t handle,
-                                   sp<IMemory>& eventMemory) = 0;
+    virtual status_t getModelState(sound_model_handle_t handle) = 0;
 
 };
 
diff --git a/include/soundtrigger/SoundTrigger.h b/include/soundtrigger/SoundTrigger.h
index dcf9ce8..2e2ff7a 100644
--- a/include/soundtrigger/SoundTrigger.h
+++ b/include/soundtrigger/SoundTrigger.h
@@ -52,7 +52,7 @@
 
             status_t startRecognition(sound_model_handle_t handle, const sp<IMemory>& dataMemory);
             status_t stopRecognition(sound_model_handle_t handle);
-            status_t getModelState(sound_model_handle_t handle, sp<IMemory>& eventMemory);
+            status_t getModelState(sound_model_handle_t handle);
 
             // BpSoundTriggerClient
             virtual void onRecognitionEvent(const sp<IMemory>& eventMemory);