diff --git a/runtime/ftplugin/spec.vim b/runtime/ftplugin/spec.vim
index 75eebec..ce00021 100644
--- a/runtime/ftplugin/spec.vim
+++ b/runtime/ftplugin/spec.vim
@@ -18,8 +18,8 @@
 	endif
 endif
 
-if !hasmapto("call SpecChangelog(\"\")<CR>")
-       noremap <buffer> <unique> <script> <Plug>SpecChangelog :call SpecChangelog("")<CR>
+if !hasmapto("call <SID>SpecChangelog(\"\")<CR>")
+       noremap <buffer> <unique> <script> <Plug>SpecChangelog :call <SID>SpecChangelog("")<CR>
 endif
 
 if !exists("*s:GetRelVer")