diff --git a/my_configs.vim b/my_configs.vim
index a89dedd3..48501123 100644
--- a/my_configs.vim
+++ b/my_configs.vim
@@ -1,2 +1,3 @@
 set nu
 set mouse+=a
+nmap <leader>a :exec &mouse!=""? "set mouse=" : "set mouse+=a"<cr>