1 files changed, 4 insertions, 3 deletions
diff --git a/alc/backends/sndio.cpp b/alc/backends/sndio.cpp
index e0c70762..5657a241 100644
--- a/alc/backends/sndio.cpp
+++ b/alc/backends/sndio.cpp
@@ -85,9 +85,10 @@ int SndioPlayback::mixerProc()
         ALubyte *WritePtr{mBuffer.data()};
         size_t len{mBuffer.size()};
 
-        lock();
-        aluMixData(mDevice, WritePtr, static_cast<ALuint>(len/frameSize));
-        unlock();
+        {
+            std::lock_guard<SndioPlayback> _{*this};
+            aluMixData(mDevice, WritePtr, static_cast<ALuint>(len/frameSize));
+        }
         while(len > 0 && !mKillNow.load(std::memory_order_acquire))
         {
             size_t wrote{sio_write(mSndHandle, WritePtr, len)};