diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index c1c865df60..15b81f2f56 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -3903,6 +3903,8 @@ static const char *pty_ignored_env_vars[] = {
   "COLORFGBG",
   "COLORTERM",
 #endif
+  "VIM",
+  "VIMRUNTIME",
   NULL
 };