diff --git a/dlls/winegstreamer/media_source.c b/dlls/winegstreamer/media_source.c
index 7b0857158ae..8b9d42ea3f0 100644
--- a/dlls/winegstreamer/media_source.c
+++ b/dlls/winegstreamer/media_source.c
@@ -1570,10 +1570,10 @@ static HRESULT WINAPI media_source_Shutdown(IMFMediaSource *iface)
     free(source->descriptors);
     free(source->streams);
 
-    MFUnlockWorkQueue(source->async_commands_queue);
-
     LeaveCriticalSection(&source->cs);
 
+    MFUnlockWorkQueue(source->async_commands_queue);
+
     return S_OK;
 }