diff --git a/.vimrc b/.vimrc
index f6aee492b..46eae46c1 100644
--- a/.vimrc
+++ b/.vimrc
@@ -614,7 +614,9 @@
             else
                 let s:ctrlp_fallback = 'find %s -type f'
             endif
-            unlet g:ctrlp_user_command
+            if exists("g:ctrlp_user_command")
+                unlet g:ctrlp_user_command
+            endif
             let g:ctrlp_user_command = {
                 \ 'types': {
                     \ 1: ['.git', 'cd %s && git ls-files . --cached --exclude-standard --others'],