diff --git a/train.py b/train.py
index 75b109ed..4fa925ef 100644
--- a/train.py
+++ b/train.py
@@ -399,7 +399,7 @@ def evaluate(model, criterion, criterion_st, ap, current_step, epoch):
         test_audios = {}
         test_figures = {}
         print(" | > Synthesizing test sentences")
-        speaker_id = 0 if c.num_speakers > 1 else None
+        speaker_id = 0 if c.use_speaker_embedding else None
         for idx, test_sentence in enumerate(test_sentences):
             try:
                 wav, alignment, decoder_output, postnet_output, stop_tokens = synthesis(
diff --git a/utils/synthesis.py b/utils/synthesis.py
index 78ae365e..c782b4c1 100644
--- a/utils/synthesis.py
+++ b/utils/synthesis.py
@@ -109,7 +109,7 @@ def synthesis(model,
     inputs = text_to_seqvec(text, CONFIG, use_cuda)
     speaker_id = id_to_torch(speaker_id)
     if use_cuda:
-        speaker_id.cuda()
+        speaker_id = speaker_id.cuda()
     # synthesize voice
     decoder_output, postnet_output, alignments, stop_tokens = run_model(
         model, inputs, CONFIG, truncated, speaker_id, style_mel)