diff --git a/Cargo.toml b/Cargo.toml
index 6a620220b9c..c45d0c85b7d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -146,7 +146,6 @@ used_underscore_items = { level = "allow", priority = 1 }
 arbitrary_source_item_ordering = { level = "allow", priority = 1 }
 map_with_unused_argument_over_ranges = { level = "allow", priority = 1 }
 precedence_bits = { level = "allow", priority = 1 }
-string_to_string = { level = "allow", priority = 1 }
 # nursery-lints:
 branches_sharing_code = { level = "allow", priority = 1 }
 cognitive_complexity = { level = "allow", priority = 1 }
diff --git a/src/ciphers/transposition.rs b/src/ciphers/transposition.rs
index 521d3b2843e..d5b2a75196e 100644
--- a/src/ciphers/transposition.rs
+++ b/src/ciphers/transposition.rs
@@ -161,7 +161,7 @@ fn decrypt(mut msg: String, key_order: Vec<usize>) -> String {
 
     for key in key_order {
         if let Some((_, column)) = indexed_vec.iter().find(|(key_index, _)| key_index == &key) {
-            decrypted_vec.push(column.to_string());
+            decrypted_vec.push(column.clone());
         }
     }