diff --git a/src/testdir/test_profile.vim b/src/testdir/test_profile.vim
index ab39bcb..ee61776 100644
--- a/src/testdir/test_profile.vim
+++ b/src/testdir/test_profile.vim
@@ -181,3 +181,44 @@
   call assert_fails("profile pause", 'E750:')
   call assert_fails("profile continue", 'E750:')
 endfunc
+
+func Test_profile_truncate_mbyte()
+  if !has('multi_byte') || &enc !=# 'utf-8'
+    return
+  endif
+
+  let lines = [
+    \ 'scriptencoding utf-8',
+    \ 'func! Foo()',
+    \ '  return [',
+    \ '  \ "' . join(map(range(0x4E00, 0x4E00 + 340), 'nr2char(v:val)'), '') . '",',
+    \ '  \ "' . join(map(range(0x4F00, 0x4F00 + 340), 'nr2char(v:val)'), '') . '",',
+    \ '  \ ]',
+    \ 'endfunc',
+    \ 'call Foo()',
+    \ ]
+
+  call writefile(lines, 'Xprofile_file.vim')
+  call system(v:progpath
+    \ . ' -es --clean --cmd "set enc=utf-8"'
+    \ . ' -c "profile start Xprofile_file.log"'
+    \ . ' -c "profile file Xprofile_file.vim"'
+    \ . ' -c "so Xprofile_file.vim"'
+    \ . ' -c "qall!"')
+  call assert_equal(0, v:shell_error)
+
+  split Xprofile_file.log
+  if &fenc != ''
+    call assert_equal('utf-8', &fenc)
+  endif
+  /func! Foo()
+  let lnum = line('.')
+  call assert_match('^\s*return \[$', getline(lnum + 1))
+  call assert_match("\u4F52$", getline(lnum + 2))
+  call assert_match("\u5052$", getline(lnum + 3))
+  call assert_match('^\s*\\ \]$', getline(lnum + 4))
+  bwipe!
+
+  call delete('Xprofile_file.vim')
+  call delete('Xprofile_file.log')
+endfunc