diff --git a/rpcs3/rpcs3qt/log_frame.cpp b/rpcs3/rpcs3qt/log_frame.cpp
index 480d499225..80939cf43c 100644
--- a/rpcs3/rpcs3qt/log_frame.cpp
+++ b/rpcs3/rpcs3qt/log_frame.cpp
@@ -12,6 +12,7 @@
 #include <QVBoxLayout>
 
 #include <deque>
+#include <mutex>
 #include "Utilities/sema.h"
 
 extern fs::file g_tty;