diff --git a/third_party/nacl-ported-tests/libc/memcpy_move_set.cc b/third_party/nacl-ported-tests/libc/memcpy_move_set.cc
index 57c3017..4e1cb0d 100644
--- a/third_party/nacl-ported-tests/libc/memcpy_move_set.cc
+++ b/third_party/nacl-ported-tests/libc/memcpy_move_set.cc
@@ -81,7 +81,7 @@
    * check that the source and the destination match after the call.
    */
   void checked_memcpy(void *dst, void *src, unsigned n) {
-    ASSERT_LT((unsigned char *)dst + n, (unsigned char *)buf + total_buf_len);
+    ASSERT_LE((unsigned char *)dst + n, (unsigned char *)buf + total_buf_len);
     void *ret = memcpy(dst, src, n);
     char formatted[256];
     if (ret != dst) {
@@ -218,7 +218,7 @@
 /* Test 11: memcpy large chunk, from unaligned to aligned address */
 TEST_F(MemCopyMoveTests, TestMemcpyLargeChunkUToA) {
   src = arrptr + 1;
-  dst = arrptr + large_length;
+  dst = arrptr + large_length + medium_length;
   checked_memcpy(dst, src, large_length);
   EXPECT_EQ(130u, (unsigned)dst[129]);
 }