diff --git a/lib/lua/envvar_newcommands.lua b/lib/lua/envvar_newcommands.lua
index 24b2c10..564f737 100644
--- a/lib/lua/envvar_newcommands.lua
+++ b/lib/lua/envvar_newcommands.lua
@@ -30,7 +30,7 @@ local macros_to_envvars = {
 
 for macro_name, env_var in pairs(macros_to_envvars) do
     local content = os.getenv(env_var)
-    if content == nil then
+    if content == nil or content == "" then
         content = missing
     end
     --[[