diff --git a/src/modules/Playerbot/Performance/ShardedMetricsCollector.cpp b/src/modules/Playerbot/Performance/ShardedMetricsCollector.cpp
index 3e2ac0bb7..9b6c146a8 100644
--- a/src/modules/Playerbot/Performance/ShardedMetricsCollector.cpp
+++ b/src/modules/Playerbot/Performance/ShardedMetricsCollector.cpp
@@ -11,6 +11,7 @@
 #include "Log.h"
 #include <algorithm>
 #include <fstream>
+#include <mutex>
 #include <iomanip>
 #include <sstream>