diff --git a/open_seq2seq/data/text2speech/text2speech.py b/open_seq2seq/data/text2speech/text2speech.py
index 0f6b9d1b2..73fc82c43 100644
--- a/open_seq2seq/data/text2speech/text2speech.py
+++ b/open_seq2seq/data/text2speech/text2speech.py
@@ -320,7 +320,7 @@ def build_graph(self):
             num_parallel_calls=8,
         )
         if (self.params.get("duration_max", None) or
-            self.params.get("duration_max", None)):
+            self.params.get("duration_min", None)):
           self._dataset = self._dataset.filter(
               lambda txt, txt_len, spec, stop, spec_len:
                   tf.logical_and(