diff --git a/crates/cast/src/lib.rs b/crates/cast/src/lib.rs
index f52dcb290a329..0d9d68af80219 100644
--- a/crates/cast/src/lib.rs
+++ b/crates/cast/src/lib.rs
@@ -1241,7 +1241,7 @@ impl SimpleCast {
     pub fn to_unit(value: &str, unit: &str) -> Result<String> {
         let value = DynSolType::coerce_str(&DynSolType::Uint(256), value)?
             .as_uint()
-            .wrap_err("Could not convert to uint")?
+            .wrap_err("could not convert to uint")?
             .0;
 
         Ok(match unit {