diff --git a/test/test_prepare_command.vader b/test/test_prepare_command.vader
index 4a12b9d0..6a71eaed 100644
--- a/test/test_prepare_command.vader
+++ b/test/test_prepare_command.vader
@@ -64,7 +64,11 @@ Execute(cmd /s/c as a string should be used on Windows):
 Execute(Setting ale_shell should cause ale#job#PrepareCommand to use set shell):
   let g:ale_shell = '/foo/bar'
 
-  AssertEqual ['/foo/bar', '-c', 'foobar'], ale#job#PrepareCommand(bufnr(''), "foobar")
+  if has('win32')
+    AssertEqual ['/foo/bar', '/c', 'foobar'], ale#job#PrepareCommand(bufnr(''), "foobar")
+  else
+    AssertEqual ['/foo/bar', '-c', 'foobar'], ale#job#PrepareCommand(bufnr(''), "foobar")
+  endif
 
   let g:ale_shell_arguments = '-x'