diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index e56c8a2391..3908ce0938 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -684,6 +684,11 @@ func Test_caddbuffer_to_empty()
   helpgr quickfix
   call setqflist([], 'r')
   cad
-  call assert_fails('cn', 'E553:')
+  try
+    cn
+  catch
+    " number of matches is unknown
+    call assert_true(v:exception =~ 'E553:')
+  endtry
   quit!
 endfunc
diff --git a/src/version.c b/src/version.c
index 9a7e19ea71..1a5b6e7f64 100644
--- a/src/version.c
+++ b/src/version.c
@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1650,
 /**/
     1649,
 /**/