1 files changed, 4 insertions, 2 deletions
diff --git a/Stars45/SoundCard.cpp b/Stars45/SoundCard.cpp
index c0b1368..1e54cce 100644
--- a/Stars45/SoundCard.cpp
+++ b/Stars45/SoundCard.cpp
@@ -11,6 +11,8 @@
     Abstract sound card class
 */
 
+#include <mutex>
+
 #include "SoundCard.h"
 #include "Sound.h"
 
@@ -72,7 +74,7 @@ SoundCard::UpdateThread()
 void
 SoundCard::Update()
 {
-    AutoThreadSync a(sync);
+    const std::lock_guard<std::mutex> lock(sync);
 
     ListIter<Sound> iter = sounds;
     while (++iter) {
@@ -93,7 +95,7 @@ SoundCard::Update()
 void
 SoundCard::AddSound(Sound* s)
 {
-    AutoThreadSync a(sync);
+    const std::lock_guard<std::mutex> lock(sync);
 
     if (!sounds.contains(s))
     sounds.append(s);