diff --git a/vim/merlin/autoload/neomake/makers/ft/ocamlinterface.vim b/vim/merlin/autoload/neomake/makers/ft/ocamlinterface.vim
new file mode 100644
index 0000000000..61772ca8da
--- /dev/null
+++ b/vim/merlin/autoload/neomake/makers/ft/ocamlinterface.vim
@@ -0,0 +1,11 @@
+function! neomake#makers#ft#ocamlinterface#EnabledMakers() abort
+  return ['merlin']
+endfunction
+
+function! neomake#makers#ft#ocamlinterface#merlin() abort
+  let maker = {}
+  function! maker.get_list_entries(jobinfo)
+    return merlin#ErrorLocList()
+  endfunction
+  return maker
+endfunction
diff --git a/vim/merlin/autoload/neomake/makers/ft/ocamllex.vim b/vim/merlin/autoload/neomake/makers/ft/ocamllex.vim
new file mode 100644
index 0000000000..9e6e96bc5e
--- /dev/null
+++ b/vim/merlin/autoload/neomake/makers/ft/ocamllex.vim
@@ -0,0 +1,11 @@
+function! neomake#makers#ft#ocamllex#EnabledMakers() abort
+  return ['merlin']
+endfunction
+
+function! neomake#makers#ft#ocamllex#merlin() abort
+  let maker = {}
+  function! maker.get_list_entries(jobinfo)
+    return merlin#ErrorLocList()
+  endfunction
+  return maker
+endfunction
diff --git a/vim/merlin/dune b/vim/merlin/dune
index 40c3348604..e9c55d1788 100644
--- a/vim/merlin/dune
+++ b/vim/merlin/dune
@@ -13,9 +13,12 @@
         (ftdetect/merlin.vim as vim/ftdetect/merlin.vim)
         (ftplugin/merlin.vim as vim/ftplugin/merlin.vim)
         (ftplugin/ocaml.vim as vim/ftplugin/ocaml.vim)
+        (ftplugin/ocamlinterface.vim as vim/ftplugin/ocamlinterface.vim)
+        (ftplugin/ocamllex.vim as vim/ftplugin/ocamllex.vim)
         (ftplugin/omlet.vim as vim/ftplugin/omlet.vim)
         (ftplugin/reason.vim as vim/ftplugin/reason.vim)
         (plugin/merlin.vim as vim/plugin/merlin.vim)
         (syntax_checkers/ocaml/merlin.vim as vim/syntax_checkers/ocaml/merlin.vim)
+        (syntax_checkers/ocamlinterface/merlin.vim as vim/syntax_checkers/ocamlinterface/merlin.vim)
         (syntax_checkers/omlet/merlin.vim as vim/syntax_checkers/omlet/merlin.vim)
         (syntax/merlin.vim as vim/syntax/merlin.vim)))
diff --git a/vim/merlin/ftplugin/menhir.vim b/vim/merlin/ftplugin/menhir.vim
new file mode 100644
index 0000000000..2e33e14808
--- /dev/null
+++ b/vim/merlin/ftplugin/menhir.vim
@@ -0,0 +1,2 @@
+" Activate merlin on current buffer
+call merlin#Register()
diff --git a/vim/merlin/ftplugin/ocamlinterface.vim b/vim/merlin/ftplugin/ocamlinterface.vim
new file mode 100644
index 0000000000..2e33e14808
--- /dev/null
+++ b/vim/merlin/ftplugin/ocamlinterface.vim
@@ -0,0 +1,2 @@
+" Activate merlin on current buffer
+call merlin#Register()
diff --git a/vim/merlin/ftplugin/ocamllex.vim b/vim/merlin/ftplugin/ocamllex.vim
new file mode 100644
index 0000000000..2e33e14808
--- /dev/null
+++ b/vim/merlin/ftplugin/ocamllex.vim
@@ -0,0 +1,2 @@
+" Activate merlin on current buffer
+call merlin#Register()
diff --git a/vim/merlin/syntax_checkers/ocamlinterface/merlin.vim b/vim/merlin/syntax_checkers/ocamlinterface/merlin.vim
new file mode 100644
index 0000000000..e5702ac482
--- /dev/null
+++ b/vim/merlin/syntax_checkers/ocamlinterface/merlin.vim
@@ -0,0 +1,23 @@
+" Enable Syntastic support
+" Make sure syntax_checkers directory is on runtime path, then set
+" :let g:syntastic_ocamlinterface_checkers=['merlin']
+
+function! SyntaxCheckers_ocamlinterface_merlin_IsAvailable()
+  if !exists("*merlin#SelectBinary")
+    return 0
+  endif
+  try
+    let l:path = merlin#SelectBinary()
+    return executable(l:path)
+  catch
+    return 0
+  endtry
+endfunction
+
+function! SyntaxCheckers_ocamlinterface_merlin_GetLocList()
+  return merlin#ErrorLocList()
+endfunction
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'ocamlinterface',
+    \ 'name': 'merlin'})