diff --git a/src/csv.rs b/src/csv.rs
index 4afb7a9..c98ca67 100644
--- a/src/csv.rs
+++ b/src/csv.rs
@@ -52,15 +52,15 @@ impl Row {
 
 fn make_checksum() -> String {
     let base = rand::random_range(10000..99999).to_string();
-    let expect = "a valid character in the base checksum";
+    let split_expect = "a valid character in the base checksum";
 
     let split = format!(
         "{}{}{}{}{}",
-        base.chars().next().expect(expect),
-        base.chars().nth(2).expect(expect),
-        base.chars().nth(4).expect(expect),
-        base.chars().nth(1).expect(expect),
-        base.chars().nth(3).expect(expect)
+        base.chars().next().expect(split_expect),
+        base.chars().nth(2).expect(split_expect),
+        base.chars().nth(4).expect(split_expect),
+        base.chars().nth(1).expect(split_expect),
+        base.chars().nth(3).expect(split_expect)
     )
     .repeat(2);