diff --git a/src/nvim/testdir/test_system.vim b/src/nvim/testdir/test_system.vim
index 424cb4abd0..9cf8690d57 100644
--- a/src/nvim/testdir/test_system.vim
+++ b/src/nvim/testdir/test_system.vim
@@ -3,7 +3,7 @@
 source shared.vim
 source check.vim
 
-function! Test_System()
+func Test_System()
   if !executable('echo') || !executable('cat') || !executable('wc')
     return
   endif