diff --git a/crates/lightbeam/src/backend.rs b/crates/lightbeam/src/backend.rs
index 48a3d28da9..b2f5e2d967 100644
--- a/crates/lightbeam/src/backend.rs
+++ b/crates/lightbeam/src/backend.rs
@@ -5533,7 +5533,7 @@ impl<'this, M: ModuleContext> Context<'this, M> {
             slice = rest;
         }
 
-        mem::replace(&mut self.block_state.stack, stack);
+        let _ = mem::replace(&mut self.block_state.stack, stack);
         Ok(())
     }
 
diff --git a/crates/lightbeam/src/function_body.rs b/crates/lightbeam/src/function_body.rs
index 439a41a22f..a8ad9ea4d7 100644
--- a/crates/lightbeam/src/function_body.rs
+++ b/crates/lightbeam/src/function_body.rs
@@ -876,7 +876,7 @@ where
 
     ctx.epilogue();
 
-    mem::replace(&mut session.op_offset_map, op_offset_map);
+    let _ = mem::replace(&mut session.op_offset_map, op_offset_map);
 
     Ok(())
 }