diff --git a/src/testdir/runtest.vim b/src/testdir/runtest.vim
index f03fe44..b1ffd19 100644
--- a/src/testdir/runtest.vim
+++ b/src/testdir/runtest.vim
@@ -180,6 +180,7 @@
 
 
 " Prepare for calling test_garbagecollect_now().
+" Also avois some delays in Insert mode completion.
 let v:testing = 1
 
 " By default, copy each buffer line into allocated memory, so that valgrind can
diff --git a/src/testdir/test_edit.vim b/src/testdir/test_edit.vim
index a212e8c..bde2cb0 100644
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -709,12 +709,9 @@
   %d
   call setline(1, 'A')
   call cursor(1, 1)
-  let v:testing = 1
   try
     call feedkeys("A\<c-x>\<c-k>\<esc>", 'tnix')
   catch
-    " error sleeps 2 seconds, when v:testing is not set
-    let v:testing = 0
   endtry
 
   call test_override("char_avail", 1)
@@ -962,12 +959,9 @@
   %d
   call setline(1, 'mad')
   call cursor(1, 1)
-  let v:testing = 1
   try
     call feedkeys("A\<c-x>\<c-t>\<esc>", 'tnix')
   catch
-    " error sleeps 2 seconds, when v:testing is not set
-    let v:testing = 0
   endtry
   call assert_equal(['mad'], getline(1, '$'))
   bw!
diff --git a/src/version.c b/src/version.c
index 4175c62..feedd92 100644
--- a/src/version.c
+++ b/src/version.c
@@ -720,6 +720,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1511,
+/**/
     1510,
 /**/
     1509,