diff --git a/hw/dmx/dmx.c b/hw/dmx/dmx.c
index 1dee077b5..f3e41ac17 100644
--- a/hw/dmx/dmx.c
+++ b/hw/dmx/dmx.c
@@ -231,8 +231,9 @@ static int ProcDMXForceWindowCreation(ClientPtr client)
         PanoramiXRes *win;
         int          i;
 
-        if (!(win = SecurityLookupIDByType(client, stuff->window, XRT_WINDOW,
-                                           DixReadAccess)))
+        if (Success != dixLookupResourceByType((pointer*) &win,
+					       stuff->window, XRT_WINDOW,
+					       client, DixReadAccess))
             return -1;           /* BadWindow */
 
         FOR_NSCREENS(i) {
@@ -506,8 +507,9 @@ static int dmxPopulatePanoramiX(ClientPtr client, Window window,
     int                    count = 0;
     DMXWindowAttributesRec attr;
     
-    if (!(win = SecurityLookupIDByType(client, window, XRT_WINDOW,
-                                       DixReadAccess)))
+    if (Success != dixLookupResourceByType((pointer*) &win,
+					   window, XRT_WINDOW,
+					   client, DixReadAccess))
         return -1;               /* BadWindow */
     
     FOR_NSCREENS(i) {
diff --git a/hw/dmx/glxProxy/glxcmds.c b/hw/dmx/glxProxy/glxcmds.c
index 4e2e62fa6..0f8e8d8d3 100644
--- a/hw/dmx/glxProxy/glxcmds.c
+++ b/hw/dmx/glxProxy/glxcmds.c
@@ -3074,7 +3074,10 @@ int __glXQueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)
     int nReplyBytes;
 
     req = (xGLXQueryContextInfoEXTReq *)pc;
-    ctx = (__GLXcontext *) SecurityLookupIDByType(client, req->context, __glXContextRes, DixReadAccess);
+    dixLookupResourceByType((pointer*) &ctx,
+			    req->context, __glXContextRes,
+			    client,  DixReadAccess);
+
     if (!ctx) {
         client->errorValue = req->context;
         return __glXBadContext;