diff --git a/crates/service/storyteller_web/src/tts_inference_job.rs b/crates/service/storyteller_web/src/tts_inference_job.rs
index 3516ba6d1f..aced4c1811 100644
--- a/crates/service/storyteller_web/src/tts_inference_job.rs
+++ b/crates/service/storyteller_web/src/tts_inference_job.rs
@@ -140,7 +140,7 @@ struct Inferencer {
   pub no_op_logger_millis: u64,
 
   // Maximum number of synthesizer models to hold in memory.
-  pub sidecar_max_synthesizer_models: u32,
+  pub sidecar_max_synthesizer_models: usize,
 }
 
 #[tokio::main]