diff -r c45088b19342 Objects/dictobject.c
--- a/Objects/dictobject.c	Sun Sep 11 16:47:59 2016 +0300
+++ b/Objects/dictobject.c	Sun Sep 11 22:40:10 2016 +0800
@@ -992,7 +992,7 @@
 {
     size_t i, perturb;
     size_t mask = DK_MASK(mp->ma_keys);
-    Py_ssize_t ix;
+    Py_ssize_t ix, nentries = mp->ma_keys->dk_nentries;
     PyDictKeyEntry *ep, *ep0 = DK_ENTRIES(mp->ma_keys);
 
     assert(hashpos != NULL);
@@ -1005,11 +1005,11 @@
         i = (i << 2) + i + perturb + 1;
         ix = dk_get_index(mp->ma_keys, i & mask);
     }
-    ep = &ep0[mp->ma_keys->dk_nentries];
+    ep = &ep0[nentries];
     *hashpos = i & mask;
     assert(ep->me_value == NULL);
     if (mp->ma_values)
-        *value_addr = &mp->ma_values[ix];
+        *value_addr = &mp->ma_values[nentries];
     else
         *value_addr = &ep->me_value;
     return ix;