diff --git a/hw/dmx/glxProxy/glxsingle.c b/hw/dmx/glxProxy/glxsingle.c
index abfb880a3..679a302ea 100644
--- a/hw/dmx/glxProxy/glxsingle.c
+++ b/hw/dmx/glxProxy/glxsingle.c
@@ -349,25 +349,29 @@ __glXForwardAllWithReply(__GLXclientState * cl, GLbyte * pc)
          * get the reply from the back-end server
          */
         _XReply(dpy, (xReply *) &be_reply, 0, False);
-        be_buf_size = be_reply.length << 2;
-        if (be_buf_size > 0) {
-            be_buf = (char *) malloc(be_buf_size);
-            if (be_buf) {
-                _XRead(dpy, be_buf, be_buf_size);
+        if (s == from_screen) {
+            /* Save data from last reply to send on to client */
+            be_buf_size = be_reply.length << 2;
+            if (be_buf_size > 0) {
+                be_buf = malloc(be_buf_size);
+                if (be_buf) {
+                    _XRead(dpy, be_buf, be_buf_size);
+                }
+                else {
+                    /* Throw data on the floor */
+                    _XEatDataWords(dpy, be_reply.length);
+                    return BadAlloc;
+                }
             }
-            else {
-                /* Throw data on the floor */
+        }
+        else {
+            /* Just discard data from all replies before the last one */
+            if (be_reply.length > 0)
                 _XEatDataWords(dpy, be_reply.length);
-                return BadAlloc;
-            }
         }
 
         UnlockDisplay(dpy);
         SyncHandle();
-
-        if (s > from_screen && be_buf_size > 0) {
-            free(be_buf);
-        }
     }
 
     /*
diff --git a/hw/dmx/glxProxy/glxvendor.c b/hw/dmx/glxProxy/glxvendor.c
index 50d505c4b..b475daf0f 100644
--- a/hw/dmx/glxProxy/glxvendor.c
+++ b/hw/dmx/glxProxy/glxvendor.c
@@ -332,25 +332,29 @@ __glXVForwardAllWithReply(__GLXclientState * cl, GLbyte * pc)
          * get the reply from the back-end server
          */
         _XReply(dpy, (xReply *) &be_reply, 0, False);
-        be_buf_size = be_reply.length << 2;
-        if (be_buf_size > 0) {
-            be_buf = (char *) malloc(be_buf_size);
-            if (be_buf) {
-                _XRead(dpy, be_buf, be_buf_size);
+        if (s == from_screen) {
+            /* Save data from last reply to send on to client */
+            be_buf_size = be_reply.length << 2;
+            if (be_buf_size > 0) {
+                be_buf = malloc(be_buf_size);
+                if (be_buf) {
+                    _XRead(dpy, be_buf, be_buf_size);
+                }
+                else {
+                    /* Throw data on the floor */
+                    _XEatDataWords(dpy, be_reply.length);
+                    return BadAlloc;
+                }
             }
-            else {
-                /* Throw data on the floor */
+        }
+        else {
+            /* Just discard data from all replies before the last one */
+            if (be_reply.length > 0)
                 _XEatDataWords(dpy, be_reply.length);
-                return BadAlloc;
-            }
         }
 
         UnlockDisplay(dpy);
         SyncHandle();
-
-        if (s > from_screen && be_buf_size > 0) {
-            free(be_buf);
-        }
     }
 
     /*