diff --git a/TTS/tts/utils/synthesis.py b/TTS/tts/utils/synthesis.py
index 76fdb3de..d75ac64b 100644
--- a/TTS/tts/utils/synthesis.py
+++ b/TTS/tts/utils/synthesis.py
@@ -149,7 +149,8 @@ def inv_spectrogram(postnet_output, ap, CONFIG):
 def id_to_torch(speaker_id, cuda=False):
     if speaker_id is not None:
         speaker_id = np.asarray(speaker_id)
-        speaker_id = torch.from_numpy(speaker_id).unsqueeze(0)
+        # TODO: test this for tacotron models
+        speaker_id = torch.from_numpy(speaker_id)
     if cuda:
         return speaker_id.cuda()
     return speaker_id