diff --git a/emulators/gngeo/gngeo.desc b/emulators/gngeo/gngeo.desc
index 5b5a67a5a..b06e99edd 100644
--- a/emulators/gngeo/gngeo.desc
+++ b/emulators/gngeo/gngeo.desc
@@ -23,6 +23,7 @@
 [M] Leonel Iván Saafigueroa <leonel@saafigueroa.com.ar>
 
 [C] extra/emulator
+[F] NOPARALLEL
 
 [L] GPL
 [S] Stable