diff --git a/openssl/src/ssl/mod.rs b/openssl/src/ssl/mod.rs
index 153d57c0344e45925958864fafdc4436df668a34..26964cb51f9939c4981b9ae81f3ed1b0caf35b15 100644
--- a/openssl/src/ssl/mod.rs
+++ b/openssl/src/ssl/mod.rs
@@ -682,7 +682,7 @@ cfg_if! {
 ///
 /// [`SslContextBuilder::set_alpn_protos`]: struct.SslContextBuilder.html#method.set_alpn_protos
 #[corresponds(SSL_select_next_proto)]
-pub fn select_next_proto<'a>(server: &[u8], client: &'a [u8]) -> Option<&'a [u8]> {
+pub fn select_next_proto<'a>(server: &'a [u8], client: &'a [u8]) -> Option<&'a [u8]> {
     unsafe {
         let mut out = ptr::null_mut();
         let mut outlen = 0;