diff --git a/plugins/builtin/source/content/providers/file_provider.cpp b/plugins/builtin/source/content/providers/file_provider.cpp
index af1c2e8e8..5866716ba 100644
--- a/plugins/builtin/source/content/providers/file_provider.cpp
+++ b/plugins/builtin/source/content/providers/file_provider.cpp
@@ -26,6 +26,8 @@
 
 namespace hex::plugin::builtin {
 
+    static std::mutex s_openCloseMutex;
+
     using namespace wolv::literals;
 
     std::set<FileProvider*> FileProvider::s_openedFiles;
@@ -247,6 +249,8 @@ namespace hex::plugin::builtin {
             ui::ToastInfo::open("hex.builtin.popup.error.read_only"_lang);
         }
 
+        std::scoped_lock lock(s_openCloseMutex);
+
         m_file      = std::move(file);
         m_fileStats = m_file.getFileInfo();
         m_fileSize  = m_file.getSize();
@@ -284,6 +288,8 @@ namespace hex::plugin::builtin {
 
 
     void FileProvider::close() {
+        std::scoped_lock lock(s_openCloseMutex);
+
         m_file.close();
         m_data.clear();
         s_openedFiles.erase(this);