diff --git a/exim-4.89-CVE-2017-16943.patch b/exim-4.89-CVE-2017-16943.patch
deleted file mode 100644
index bd3468d..0000000
--- a/exim-4.89-CVE-2017-16943.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-diff --git a/src/receive.c b/src/receive.c
-index 7980c32..3246621 100644
---- a/src/receive.c
-+++ b/src/receive.c
-@@ -1772,8 +1772,8 @@ for (;;)
-   (and sometimes lunatic messages can have ones that are 100s of K long) we
-   call store_release() for strings that have been copied - if the string is at
-   the start of a block (and therefore the only thing in it, because we aren't
--  doing any other gets), the block gets freed. We can only do this because we
--  know there are no other calls to store_get() going on. */
-+  doing any other gets), the block gets freed. We can only do this release if
-+  there were no allocations since the once that we want to free. */
- 
-   if (ptr >= header_size - 4)
-     {
-@@ -1782,9 +1782,10 @@ for (;;)
-     header_size *= 2;
-     if (!store_extend(next->text, oldsize, header_size))
-       {
-+      BOOL release_ok = store_last_get[store_pool] == next->text;
-       uschar *newtext = store_get(header_size);
-       memcpy(newtext, next->text, ptr);
--      store_release(next->text);
-+      if (release_ok) store_release(next->text);
-       next->text = newtext;
-       }
-     }