diff --git a/r5dev/engine/sys_dll2.h b/r5dev/engine/sys_dll2.h
index 450eb050..3168622a 100644
--- a/r5dev/engine/sys_dll2.h
+++ b/r5dev/engine/sys_dll2.h
@@ -1,5 +1,5 @@
 #pragma once
-#include "tier0/interface.h"
+#include "vpc/interfaces.h"
 
 class CEngineAPI
 {
diff --git a/r5dev/vpc/interfaces.h b/r5dev/vpc/interfaces.h
index dda888c9..b112fc86 100644
--- a/r5dev/vpc/interfaces.h
+++ b/r5dev/vpc/interfaces.h
@@ -47,6 +47,7 @@ enum class InterfaceStatus_t : int
 //-----------------------------------------------------------------------------
 // Mapping of interface string to globals
 //-----------------------------------------------------------------------------
+typedef void* (*CreateInterfaceFn)(const char* pName, int* pReturnCode);
 typedef void* (*InstantiateInterfaceFn)();
 struct InterfaceGlobals_t
 {