1 files changed, 6 insertions, 4 deletions
diff --git a/src/builder.rs b/src/builder.rs
index 23090c6..8abbe54 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -77,11 +77,12 @@ impl ConfigBuilder {
     /// # Errors
     ///
     /// Fails if `Expression::from_str(key)` fails.
-    pub fn set_default<T>(&mut self, key: &str, value: T) -> error::Result<&mut ConfigBuilder>
+    pub fn set_default<S, T>(&mut self, key: S, value: T) -> error::Result<&mut ConfigBuilder>
     where
+        S: AsRef<str>,
         T: Into<Value>,
     {
-        self.defaults.insert(Expression::from_str(key)?, value.into());
+        self.defaults.insert(Expression::from_str(key.as_ref())?, value.into());
         Ok(self)
     }
 
@@ -103,11 +104,12 @@ impl ConfigBuilder {
     /// # Errors
     ///
     /// Fails if `Expression::from_str(key)` fails.
-    pub fn set_override<T>(&mut self, key: &str, value: T) -> error::Result<&mut ConfigBuilder>
+    pub fn set_override<S, T>(&mut self, key: S, value: T) -> error::Result<&mut ConfigBuilder>
     where
+        S: AsRef<str>,
         T: Into<Value>,
     {
-        self.overrides.insert(Expression::from_str(key)?, value.into());
+        self.overrides.insert(Expression::from_str(key.as_ref())?, value.into());
         Ok(self)
     }