diff --git a/rpcs3/Emu/SysCalls/lv2/sys_timer.cpp b/rpcs3/Emu/SysCalls/lv2/sys_timer.cpp
index e663f170ae..a3c9df7a1b 100644
--- a/rpcs3/Emu/SysCalls/lv2/sys_timer.cpp
+++ b/rpcs3/Emu/SysCalls/lv2/sys_timer.cpp
@@ -4,6 +4,7 @@
 #include "Emu/SysCalls/SysCalls.h"
 
 #include "Emu/Event.h"
+#include "sys_event.h"
 #include "sys_timer.h"
 
 SysCallBase sys_timer("sys_timer");