diff --git a/src/d/d_event_data.cpp b/src/d/d_event_data.cpp
index a339c835c7..6e8a57b57a 100644
--- a/src/d/d_event_data.cpp
+++ b/src/d/d_event_data.cpp
@@ -15,6 +15,8 @@
 #include "SSystem/SComponent/c_counter.h"
 #include <cstring>
 
+#include "JSystem/JKernel/JKRExpHeap.h"
+
 inline BOOL dEvDtFlagCheck(int i_flag) {
     return dComIfGp_getEventManager().getFlags().flagCheck(i_flag);
 }