diff --git a/storage/heap/ha_heap.cc b/storage/heap/ha_heap.cc
index ec219c1590d..345ebb8419f 100644
--- a/storage/heap/ha_heap.cc
+++ b/storage/heap/ha_heap.cc
@@ -100,6 +100,7 @@ const char **ha_heap::bas_ext() const
 
 int ha_heap::open(const char *name, int mode, uint test_if_locked)
 {
+  set_if_bigger(table->s->reclength, sizeof (uchar*));
   internal_table= test(test_if_locked & HA_OPEN_INTERNAL_TABLE);
   if (internal_table || (!(file= heap_open(name, mode)) && my_errno == ENOENT))
   {