diff --git a/src/cpp/http/response.cpp b/src/cpp/http/response.cpp
index e6a8456..cd487c4 100644
--- a/src/cpp/http/response.cpp
+++ b/src/cpp/http/response.cpp
@@ -287,7 +287,7 @@ std::optional<fastly::backend::Backend> Response::get_backend() {
 
 std::optional<std::string> Response::get_backend_addr() {
   std::string addr;
-  bool existed{this->res->get_backend_name(addr)};
+  bool existed{this->res->get_backend_addr(addr)};
   if (!existed) {
     return std::nullopt;
   } else {
diff --git a/src/http/response.rs b/src/http/response.rs
index 2dff3e9..d1b9d44 100644
--- a/src/http/response.rs
+++ b/src/http/response.rs
@@ -255,7 +255,7 @@ impl Response {
 
     pub fn get_stale_while_revalidate(&self, mut out: Pin<&mut u32>) -> bool {
         self.0
-            .get_age()
+            .get_stale_while_revalidate()
             .map(|swr| swr.as_millis())
             .map(ensure_u32)
             .map(|swr| out.set(swr))