diff --git a/compiler/mono/src/borrow.rs b/compiler/mono/src/borrow.rs
index d27c9d0f67..a3a10ca015 100644
--- a/compiler/mono/src/borrow.rs
+++ b/compiler/mono/src/borrow.rs
@@ -480,7 +480,7 @@ impl<'a> BorrowInfState<'a> {
             Invoke {
                 symbol,
                 call,
-                layout,
+                layout: _,
                 pass,
                 fail,
             } => {
diff --git a/compiler/mono/src/inc_dec.rs b/compiler/mono/src/inc_dec.rs
index 8b805c5db9..7740e248fd 100644
--- a/compiler/mono/src/inc_dec.rs
+++ b/compiler/mono/src/inc_dec.rs
@@ -221,7 +221,7 @@ fn consume_expr(m: &VarMap, e: &Expr<'_>) -> bool {
     }
 }
 
-fn consume_call(m: &VarMap, e: &crate::ir::Call<'_>) -> bool {
+fn consume_call(_: &VarMap, _: &crate::ir::Call<'_>) -> bool {
     // variables bound by a call (or invoke) must always be consumed
     true
 }