diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index 2b0a294..a3d2b8f 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -397,7 +397,7 @@
         \ 'user_data': '',
         \ }
   let v:completed_item = value
-  call assert_equal(v:completed_item, value)
+  call assert_equal(value, v:completed_item)
 endfunc
 
 func CompleteTest(findstart, query)
diff --git a/src/testdir/test_messages.vim b/src/testdir/test_messages.vim
index ea5aee1..1f1bb9b 100644
--- a/src/testdir/test_messages.vim
+++ b/src/testdir/test_messages.vim
@@ -409,14 +409,14 @@
 
   " Check change/restore cmdheight when macro
   call feedkeys("qa", "xt")
-  call assert_equal(&cmdheight, 1)
+  call assert_equal(1, &cmdheight)
   call feedkeys("q", "xt")
-  call assert_equal(&cmdheight, 0)
+  call assert_equal(0, &cmdheight)
 
   call setline(1, 'somestring')
   call feedkeys("y", "n")
   %s/somestring/otherstring/gc
-  call assert_equal(getline(1), 'otherstring')
+  call assert_equal('otherstring', getline(1))
 
   call feedkeys("g\<C-g>", "xt")
   call assert_match(
@@ -428,7 +428,16 @@
     split
   endfor
   only
-  call assert_equal(&cmdheight, 0)
+  call assert_equal(0, &cmdheight)
+
+  " Check that pressing ":" should not scroll a window
+  " Check for what patch 9.0.0115 fixes
+  botright 10new
+  call setline(1, range(12))
+  7
+  call feedkeys(":\"\<C-R>=line('w0')\<CR>\<CR>", "xt")
+  call assert_equal('"1', @:)
+  bwipe!
 
   set cmdheight&
   set showcmd&