diff --git a/site_ansto/nhq200driv.c b/site_ansto/nhq200driv.c
index 6598ad27..8a7ca37d 100644
--- a/site_ansto/nhq200driv.c
+++ b/site_ansto/nhq200driv.c
@@ -57,6 +57,8 @@ typedef struct __EVDriver  *pEVDriver;
 #include <modriv.h>
  */
 #include <rs232controller.h>
+#include <nwatch.h>
+#include <multichan.h>
 #include "hardsup/nhq200util.h"
 #include "hardsup/el734_def.h"
 #include "hardsup/el734fix.h"
@@ -287,12 +289,13 @@ pEVDriver CreateNHQ200Driver(int argc, char *argv[])
   }
 
   pNew = CreateEVDriver(argc,argv);
-  pSim = (pNHQ200Driv)malloc(sizeof(NHQ200Driv));
-  memset(pSim,0,sizeof(NHQ200Driv));
-  if(!pNew || !pSim)
-  {
+  if(!pNew)
     return NULL;
-  }
+  pSim = (pNHQ200Driv)malloc(sizeof(NHQ200Driv));
+  if(!pSim)
+    return NULL;
+  memset(pSim,0,sizeof(NHQ200Driv));
+
   pNew->pPrivate = pSim;
   pNew->KillPrivate = KillNHQ200;