diff --git a/src/nvim/testdir/test_compiler.vim b/src/nvim/testdir/test_compiler.vim
index 06522d77ec..6bb602717f 100644
--- a/src/nvim/testdir/test_compiler.vim
+++ b/src/nvim/testdir/test_compiler.vim
@@ -38,10 +38,11 @@ func Test_compiler()
 endfunc
 
 func Test_compiler_without_arg()
-  let a=split(execute('compiler'))
-  call assert_match($VIMRUNTIME .. '/compiler/ant.vim$',   a[0])
-  call assert_match($VIMRUNTIME .. '/compiler/bcc.vim$',   a[1])
-  call assert_match($VIMRUNTIME .. '/compiler/xmlwf.vim$', a[-1])
+  let runtime = substitute($VIMRUNTIME, '\\', '/', 'g')
+  let a = split(execute('compiler'))
+  call assert_match(runtime .. '/compiler/ant.vim$',   a[0])
+  call assert_match(runtime .. '/compiler/bcc.vim$',   a[1])
+  call assert_match(runtime .. '/compiler/xmlwf.vim$', a[-1])
 endfunc
 
 func Test_compiler_completion()
diff --git a/src/nvim/testdir/test_spell.vim b/src/nvim/testdir/test_spell.vim
index 7d33ab9054..e5eaa01e92 100644
--- a/src/nvim/testdir/test_spell.vim
+++ b/src/nvim/testdir/test_spell.vim
@@ -130,20 +130,21 @@ endfunc
 func Test_spellinfo()
   throw 'skipped: Nvim does not support enc=latin1'
   new
+  let runtime = substitute($VIMRUNTIME, '\\', '/', 'g')
 
   set enc=latin1 spell spelllang=en
-  call assert_match("^\nfile: " .. $VIMRUNTIME .. "/spell/en.latin1.spl\n$", execute('spellinfo'))
+  call assert_match("^\nfile: " .. runtime .. "/spell/en.latin1.spl\n$", execute('spellinfo'))
 
   set enc=cp1250 spell spelllang=en
-  call assert_match("^\nfile: " .. $VIMRUNTIME .. "/spell/en.ascii.spl\n$", execute('spellinfo'))
+  call assert_match("^\nfile: " .. runtime .. "/spell/en.ascii.spl\n$", execute('spellinfo'))
 
   set enc=utf-8 spell spelllang=en
-  call assert_match("^\nfile: " .. $VIMRUNTIME .. "/spell/en.utf-8.spl\n$", execute('spellinfo'))
+  call assert_match("^\nfile: " .. runtime .. "/spell/en.utf-8.spl\n$", execute('spellinfo'))
 
   set enc=latin1 spell spelllang=en_us,en_nz
   call assert_match("^\n" .
-                 \  "file: " .. $VIMRUNTIME .. "/spell/en.latin1.spl\n" .
-                 \  "file: " .. $VIMRUNTIME .. "/spell/en.latin1.spl\n$", execute('spellinfo'))
+                 \  "file: " .. runtime .. "/spell/en.latin1.spl\n" .
+                 \  "file: " .. runtime .. "/spell/en.latin1.spl\n$", execute('spellinfo'))
 
   set spell spelllang=
   call assert_fails('spellinfo', 'E756:')