diff --git a/src/gates/subtraction_u32.rs b/src/gates/subtraction_u32.rs
index afac85be..b348b6f2 100644
--- a/src/gates/subtraction_u32.rs
+++ b/src/gates/subtraction_u32.rs
@@ -211,7 +211,7 @@ impl<F: RichField + Extendable<D>, const D: usize> Gate<F, D> for U32Subtraction
                 );
                 g
             })
-            .collect::<Vec<_>>()
+            .collect()
     }
 
     fn num_wires(&self) -> usize {