diff --git a/src/base.rs b/src/base.rs
index cca27af..8447e88 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -256,7 +256,7 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
     /// # Ok(())
     /// # }
     /// ```
-    fn check_authority<'a, T: AsRef<IriStr>>(&self, iri: T) -> Result<T, CheckError> {
+    fn check_authority<T: AsRef<IriStr>>(&self, iri: T) -> Result<T, CheckError> {
         let authority = self
             .id_unchecked()
             .and_then(|id| id.authority_components())
diff --git a/src/checked.rs b/src/checked.rs
index 96b4f58..8ec21ee 100644
--- a/src/checked.rs
+++ b/src/checked.rs
@@ -11,7 +11,7 @@ impl std::fmt::Display for CheckError {
 
 impl std::error::Error for CheckError {}
 
-pub(crate) fn check<'a, T: AsRef<IriStr>>(
+pub(crate) fn check<T: AsRef<IriStr>>(
     iri: T,
     host: &str,
     port: Option<&str>,