diff --git a/src/spice2x/util/deferlog.cpp b/src/spice2x/util/deferlog.cpp
index 21dd314..4c4f0bc 100644
--- a/src/spice2x/util/deferlog.cpp
+++ b/src/spice2x/util/deferlog.cpp
@@ -17,14 +17,14 @@ namespace deferredlogs {
     std::vector<std::vector<std::string>> deferred_errors;
 
     void defer_error_messages(std::initializer_list<std::string> messages) {
-        std::unique_lock<std::mutex> lock(deferred_errors_mutex);
+        std::lock_guard<std::mutex> lock(deferred_errors_mutex);
         deferred_errors.emplace_back(messages);
     }
 
     void dump_to_logger() {
         static std::once_flag printed;
         std::call_once(printed, []() {
-            std::unique_lock<std::mutex> lock(deferred_errors_mutex);
+            std::lock_guard<std::mutex> lock(deferred_errors_mutex);
             if (!deferred_errors.empty()) {
                 log_warning("deferred_error",
                     "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");