diff --git a/plugin/UltiSnips.vim b/plugin/UltiSnips.vim
index a5f0842..13716e5 100644
--- a/plugin/UltiSnips.vim
+++ b/plugin/UltiSnips.vim
@@ -18,30 +18,37 @@ command! -nargs=1 UltiSnipsAddFiletypes :call UltiSnips#AddFiletypes(<q-args>)
 
 " Backwards compatible functions. Prefer the ones in autoload/.
 function! UltiSnips_ExpandSnippet()
+    echoerr "Deprecated UltiSnips_ExpandSnippet called. Please use UltiSnips#ExpandSnippet." | sleep 1
     return UltiSnips#ExpandSnippet()
 endfunction
 
 function! UltiSnips_ExpandSnippetOrJump()
+    echoerr "Deprecated UltiSnips_ExpandSnippetOrJump called. Please use UltiSnips#ExpandSnippetOrJump." | sleep 1
     return UltiSnips#ExpandSnippetOrJump()
 endfunction
 
 function! UltiSnips_SnippetsInCurrentScope()
+    echoerr "Deprecated UltiSnips_SnippetsInCurrentScope called. Please use UltiSnips#SnippetsInCurrentScope." | sleep 1
     return UltiSnips#SnippetsInCurrentScope()
 endfunction
 
 function! UltiSnips_JumpBackwards()
+    echoerr "Deprecated UltiSnips_JumpBackwards called. Please use UltiSnips#JumpBackwards." | sleep 1
     return UltiSnips#JumpBackwards()
 endfunction
 
 function! UltiSnips_JumpForwards()
+    echoerr "Deprecated UltiSnips_JumpForwards called. Please use UltiSnips#JumpForwards." | sleep 1
     return UltiSnips#JumpForwards()
 endfunction
 
 function! UltiSnips_AddSnippet(...)
+    echoerr "Deprecated UltiSnips_AddSnippet called. Please use UltiSnips#AddSnippet." | sleep 1
     return call(function('UltiSnips#AddSnippet'), a:000)
 endfunction
 
 function! UltiSnips_Anon(...)
+    echoerr "Deprecated UltiSnips_Anon called. Please use UltiSnips#Anon." | sleep 1
     return call(function('UltiSnips#Anon'), a:000)
 endfunction