diff --git a/resources/systems/windows/es_systems.xml b/resources/systems/windows/es_systems.xml
index 0d969b7e9..c7e076d8e 100644
--- a/resources/systems/windows/es_systems.xml
+++ b/resources/systems/windows/es_systems.xml
@@ -216,7 +216,7 @@
         <extension>.a78 .A78 .bin .BIN .7z .7Z .zip .ZIP</extension>
         <command label="ProSystem">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\prosystem_libretro.dll %ROM%</command>
         <command label="MAME - Current">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\mame_libretro.dll "a7800 -rompath \"%GAMEDIRRAW%;%ROMPATH%\atari7800\" -cart \"%ROMRAW%\""</command>
-        <command label="MAME (Standalone)">%HIDEWINDOW% %STARTDIR%=%EMUDIR% %EMULATOR_MAME% -rompath %GAMEDIR%\;%ROMPATH%\atari7800 atari7800 -cart %ROM%</command>
+        <command label="MAME (Standalone)">%HIDEWINDOW% %STARTDIR%=%EMUDIR% %EMULATOR_MAME% -rompath %GAMEDIR%\;%ROMPATH%\atari7800 a7800 -cart %ROM%</command>
         <platform>atari7800</platform>
         <theme>atari7800</theme>
     </system>