diff --git a/release_build_files/readme.md b/release_build_files/readme.md
index 6f173209ad..1507013896 100644
--- a/release_build_files/readme.md
+++ b/release_build_files/readme.md
@@ -580,7 +580,9 @@ code.
         ([#745](https://github.com/firebase/firebase-cpp-sdk/pull/745))
     -   Messaging (Android): Fixed crash during initialization.
         ([#760](https://github.com/firebase/firebase-cpp-sdk/pull/760))
-
+    -   Remote Config (Desktop): Fixed cache expiration time value used by
+        `RemoteConfig::FetchAndActivate()`.
+        ([#767](https://github.com/firebase/firebase-cpp-sdk/pull/767))
 
 ### 8.7.0
 -   Changes
diff --git a/remote_config/src/desktop/remote_config_desktop.cc b/remote_config/src/desktop/remote_config_desktop.cc
index 7e0bafdd03..624a77ebd5 100644
--- a/remote_config/src/desktop/remote_config_desktop.cc
+++ b/remote_config/src/desktop/remote_config_desktop.cc
@@ -140,7 +140,8 @@ Future<bool> RemoteConfigInternal::FetchAndActivate() {
       future_impl_.SafeAlloc<bool>(kRemoteConfigFnFetchAndActivate);
 
   cache_expiration_in_seconds_ =
-      config_settings_.minimum_fetch_interval_in_milliseconds;
+      config_settings_.minimum_fetch_interval_in_milliseconds /
+      ::firebase::internal::kMillisecondsPerSecond;
 
   uint64_t milliseconds_since_epoch =
       std::chrono::duration_cast<std::chrono::milliseconds>(