diff --git a/src/core/hle/kernel/event.cpp b/src/core/hle/kernel/event.cpp
index 13b226501..f9938d016 100644
--- a/src/core/hle/kernel/event.cpp
+++ b/src/core/hle/kernel/event.cpp
@@ -4,6 +4,7 @@
 
 #include <map>
 #include <vector>
+#include <algorithm>
 
 #include "common/common.h"