diff --git a/candle-nn/src/layer_norm.rs b/candle-nn/src/layer_norm.rs
index a5dc9b5186..ed6321ae35 100644
--- a/candle-nn/src/layer_norm.rs
+++ b/candle-nn/src/layer_norm.rs
@@ -252,7 +252,7 @@ impl crate::Module for LayerNorm {
             .as_micros();
         let res=
         x.apply_op1_no_bwd(&InnerLayerNorm { eps: self.eps as f32 })?.broadcast_mul(&self.weight)?;
-        let res = match self.bias {
+        let res = match &self.bias {
             Some(bias) => res.broadcast_add(&bias),
             None => Ok(res),
         };