diff --git a/vim/.vimrc b/vim/.vimrc
index 393b926..b869578 100644
--- a/vim/.vimrc
+++ b/vim/.vimrc
@@ -156,7 +156,8 @@ set nocompatible
       let g:slime_paste_file = tempname()
 
     " Default session for screen
-      let g:slime_default_config = {"sessionname": "REPL", "windowname": ""}
+      let sessionname = v:version >= 801 ? trim(system("echo $STY | cut -d. -f2")) : "default"
+      let g:slime_default_config = {"sessionname": sessionname, "windowname": ""}
 
   "{- SUPERTAB -}"
     " Use the default vim completion keys for supertab completion