--- src/xserver/dix/privates.c.orig	2018-04-02 17:29:44.135069985 -0300
+++ src/xserver/dix/privates.c	2018-04-02 17:29:45.920034526 -0300
@@ -381,8 +381,11 @@
     }
     else {
         /* Resize if we can, or make sure nothing's allocated if we can't */
-        if (!allocated_early[type])
-            assert(!global_keys[type].created);
+        if (!allocated_early[type]) {
+            if(global_keys[type].created) {
+                return FALSE;
+            }
+        }
         else if (!allocated_early[type] (dixReallocPrivates, bytes))
             return FALSE;
         offset = global_keys[type].offset;