diff --git a/Cargo.toml b/Cargo.toml
index 12d168c..4b7ae6a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -64,3 +64,6 @@ std = ["num-bigint/std", "num-integer/std", "num-traits/std"]
 
 [lints.rust]
 unexpected_cfgs = { level = "allow", check-cfg = ['cfg(no_track_caller)'] }
+
+[lints.clippy]
+redundant_closure_for_method_calls = "deny"
diff --git a/src/impl_num.rs b/src/impl_num.rs
index ac5df68..c9cc23f 100644
--- a/src/impl_num.rs
+++ b/src/impl_num.rs
@@ -204,7 +204,7 @@ impl ToPrimitive for BigDecimalRef<'_> {
             scale -= 19;
         }
 
-        match scale.to_i32().and_then(|x| x.checked_neg()) {
+        match scale.to_i32().and_then(i32::checked_neg) {
             Some(pow) if 0 <= pow => {
                 // 'simple' integer case
                 let f = int_cow.to_f64().map(copy_sign_to_float)?;