diff --git a/tests/main.cpp b/tests/main.cpp
index 119a9507c..1d58c5973 100644
--- a/tests/main.cpp
+++ b/tests/main.cpp
@@ -17,8 +17,9 @@ auto testing_notcurses() -> struct notcurses* {
   notcurses_options nopts{};
   nopts.loglevel = NCLOGLEVEL_DEBUG;
   nopts.flags = NCOPTION_SUPPRESS_BANNERS
-                /* | NCOPTION_NO_ALTERNATE_SCREEN*/
-                | NCOPTION_NO_QUIT_SIGHANDLERS;
+                | NCOPTION_NO_ALTERNATE_SCREEN
+                | NCOPTION_NO_QUIT_SIGHANDLERS
+                | NCOPTION_INHIBIT_SETLOCALE;
   auto nc = notcurses_init(&nopts, nullptr);
   return nc;
 }