diff --git a/server/text_generation_server/utils/tokens.py b/server/text_generation_server/utils/tokens.py
index fa982c30..e4a2698e 100644
--- a/server/text_generation_server/utils/tokens.py
+++ b/server/text_generation_server/utils/tokens.py
@@ -301,7 +301,7 @@ class HeterogeneousNextTokenChooser:
 
         self.logit_bias_processor = (
             HeterogeneousLogitBiasProcessor(logit_biases, tokenizer, device)
-            if any([logit_bias is not None for logit_bias in logit_biases])
+            if any(logit_bias for logit_bias in logit_biases)
             else None
         )