diff --git a/src/platforms/esp32/test/main/test_erl_sources/test_mount.erl b/src/platforms/esp32/test/main/test_erl_sources/test_mount.erl
index d21e1889d..ca5298aab 100644
--- a/src/platforms/esp32/test/main/test_erl_sources/test_mount.erl
+++ b/src/platforms/esp32/test/main/test_erl_sources/test_mount.erl
@@ -25,7 +25,7 @@ start() ->
     ok = esp:mount("sdmmc", "/test", fat, []),
     {ok, Fd} = atomvm:posix_open("/test/test.txt", [o_rdwr, o_creat], 8#644),
     ok = atomvm:posix_close(Fd),
-    %ok = umount_missing(),
+    ok = umount_missing(),
     ok = esp:umount("/test"),
     ok.