diff --git a/client/crash_report_database_mac.mm b/client/crash_report_database_mac.mm
index e72838a0..c6abe8aa 100644
--- a/client/crash_report_database_mac.mm
+++ b/client/crash_report_database_mac.mm
@@ -183,13 +183,14 @@ class CrashReportDatabaseMac : public CrashReportDatabase {
   //! \brief A private extension of the Report class that maintains bookkeeping
   //!    information of the database.
   struct UploadReportMac : public UploadReport {
+#if BUILDFLAG(IS_IOS)
+    //! \brief Obtain a background task assertion while a flock is in use.
+    //!     Ensure this is defined first so it is destroyed last.
+    internal::ScopedBackgroundTask ios_background_task{"UploadReportMac"};
+#endif  // BUILDFLAG(IS_IOS)
     //! \brief Stores the flock of the file for the duration of
     //!     GetReportForUploading() and RecordUploadAttempt().
     base::ScopedFD lock_fd;
-#if BUILDFLAG(IS_IOS)
-    //! \brief Obtain a background task assertion while a flock is in use.
-    internal::ScopedBackgroundTask ios_background_task{"UploadReportMac"};
-#endif  // BUILDFLAG(IS_IOS)
   };
 
   //! \brief Locates a crash report in the database by UUID.
diff --git a/client/settings.cc b/client/settings.cc
index 8fe578f9..eef24f71 100644
--- a/client/settings.cc
+++ b/client/settings.cc
@@ -93,6 +93,11 @@ Settings::ScopedLockedFileHandle& Settings::ScopedLockedFileHandle::operator=(
   return *this;
 }
 
+Settings::ScopedLockedFileHandle::~ScopedLockedFileHandle() {
+  // Call reset() to ensure the lock is released before the ios_background_task.
+  reset();
+}
+
 #endif  // BUILDFLAG(IS_IOS)
 
 namespace internal {
diff --git a/client/settings.h b/client/settings.h
index aedf30cd..8ad8a2b1 100644
--- a/client/settings.h
+++ b/client/settings.h
@@ -171,6 +171,8 @@ class Settings {
     ScopedLockedFileHandle(ScopedLockedFileHandle&& rvalue);
     ScopedLockedFileHandle& operator=(ScopedLockedFileHandle&& rvalue);
 
+    ~ScopedLockedFileHandle();
+
    private:
     std::unique_ptr<internal::ScopedBackgroundTask> ios_background_task_;
   };