diff --git a/test/handler/test_tslint_handler.vader b/test/handler/test_tslint_handler.vader
index 4c551dc..bbaef83 100644
--- a/test/handler/test_tslint_handler.vader
+++ b/test/handler/test_tslint_handler.vader
@@ -12,6 +12,9 @@ After:
   Restore
 
   unlet! b:ale_typescript_tslint_ignore_empty_files
+  unlet! b:relative_to_root
+  unlet! b:tempname_suffix
+  unlet! b:relative_tempname
 
   call ale#test#RestoreDirectory()
   call ale#linter#Reset()
@@ -282,29 +285,31 @@ Execute(The tslint handler should not report no-implicit-dependencies errors):
   \ }])])
 
 Execute(The tslint handler should set filename keys for temporary files):
-  if !has('win32')
-    " The temporay filename below is hacked into being a relative path so we can
-    " test that we resolve the temporary filename first.
-    AssertEqual
-    \ [
-    \   {'lnum': 47, 'col': 1, 'code': 'curly', 'end_lnum': 47, 'type': 'E', 'end_col': 26, 'text': 'if statements must be braced'},
-    \ ],
-    \ ale_linters#typescript#tslint#Handle(bufnr(''), [json_encode([
-    \   {
-    \     'endPosition': {
-    \       'character':25,
-    \       'line':46,
-    \       'position':1383,
-    \     },
-    \     'failure': 'if statements must be braced',
-    \     'name': substitute(substitute(substitute(expand('%:p'), '[^/\\]', '', 'g'), '.', '../', 'g') . tempname(), '\([A-Z]:\\\)[A-Z]:', '\1', ''),
-    \     'ruleName': 'curly',
-    \     'ruleSeverity':'ERROR',
-    \     'startPosition': {
-    \       'character':0,
-    \       'line':46,
-    \       'position':1358,
-    \     }
-    \   },
-    \ ])])
-  endif
+  " The temporay filename below is hacked into being a relative path so we can
+  " test that we resolve the temporary filename first.
+  let b:relative_to_root = substitute(expand('%:p'), '\v[^/\\]*([/\\])[^/\\]*', has('win32') ? '..\' : '../', 'g')
+  let b:tempname_suffix = substitute(tempname(), '^\v([A-Z]:)?[/\\]', '', '')
+  let b:relative_tempname = b:relative_to_root . b:tempname_suffix
+
+  AssertEqual
+  \ [
+  \   {'lnum': 47, 'col': 1, 'code': 'curly', 'end_lnum': 47, 'type': 'E', 'end_col': 26, 'text': 'if statements must be braced'},
+  \ ],
+  \ ale_linters#typescript#tslint#Handle(bufnr(''), [json_encode([
+  \   {
+  \     'endPosition': {
+  \       'character':25,
+  \       'line':46,
+  \       'position':1383,
+  \     },
+  \     'failure': 'if statements must be braced',
+  \     'name': b:relative_tempname,
+  \     'ruleName': 'curly',
+  \     'ruleSeverity':'ERROR',
+  \     'startPosition': {
+  \       'character':0,
+  \       'line':46,
+  \       'position':1358,
+  \     }
+  \   },
+  \ ])])