1 files changed, 3 insertions, 3 deletions
diff --git a/runtime/ops/os/mod.rs b/runtime/ops/os/mod.rs
index b93935955..844fbaecc 100644
--- a/runtime/ops/os/mod.rs
+++ b/runtime/ops/os/mod.rs
@@ -78,10 +78,10 @@ fn op_exec_path(state: &mut OpState) -> Result<String, AnyError> {
 #[op]
 fn op_set_env(
   state: &mut OpState,
-  key: String,
-  value: String,
+  key: &str,
+  value: &str,
 ) -> Result<(), AnyError> {
-  state.borrow_mut::<Permissions>().env.check(&key)?;
+  state.borrow_mut::<Permissions>().env.check(key)?;
   if key.is_empty() {
     return Err(type_error("Key is an empty string."));
   }