diff --git a/tests/environment-terminfo.nix b/tests/environment-terminfo.nix
index c0fb968..487859e 100644
--- a/tests/environment-terminfo.nix
+++ b/tests/environment-terminfo.nix
@@ -5,6 +5,6 @@ with lib;
 {
   test = ''
     echo checking /usr/share/terminfo in environment >&2
-    grep 'export TERMINFO=.*:/usr/share/terminfo' ${config.system.build.setEnvironment}
+    grep 'export TERMINFO_DIRS=.*:/usr/share/terminfo' ${config.system.build.setEnvironment}
   '';
 }