diff --git a/resources/systems/macos/es_systems.xml b/resources/systems/macos/es_systems.xml
index 81a371f23..6a62a91fc 100644
--- a/resources/systems/macos/es_systems.xml
+++ b/resources/systems/macos/es_systems.xml
@@ -140,7 +140,7 @@
         <name>atari5200</name>
         <fullname>Atari 5200</fullname>
         <path>%ROMPATH%/atari5200</path>
-        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .cas .CAS .cdm .CDM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
+        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .car .CAR .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
         <command label="a5200">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/a5200_libretro.dylib %ROM%</command>
         <command label="Atari800">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/atari800_libretro.dylib %ROM%</command>
         <command label="Atari800 (Standalone)">%EMULATOR_ATARI800% %ROM%</command>
@@ -160,7 +160,7 @@
         <name>atari800</name>
         <fullname>Atari 800</fullname>
         <path>%ROMPATH%/atari800</path>
-        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
+        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .car .CAR .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
         <command label="Atari800">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/atari800_libretro.dylib %ROM%</command>
         <command label="Atari800 (Standalone)">%EMULATOR_ATARI800% %ROM%</command>
         <platform>atari800</platform>
diff --git a/resources/systems/unix/es_systems.xml b/resources/systems/unix/es_systems.xml
index 3ea95dbfe..04e5ee959 100644
--- a/resources/systems/unix/es_systems.xml
+++ b/resources/systems/unix/es_systems.xml
@@ -143,7 +143,7 @@
         <name>atari5200</name>
         <fullname>Atari 5200</fullname>
         <path>%ROMPATH%/atari5200</path>
-        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .cas .CAS .cdm .CDM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
+        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .car .CAR .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
         <command label="a5200">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/a5200_libretro.so %ROM%</command>
         <command label="Atari800">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/atari800_libretro.so %ROM%</command>
         <command label="Atari800 (Standalone)">%EMULATOR_ATARI800% %ROM%</command>
@@ -163,7 +163,7 @@
         <name>atari800</name>
         <fullname>Atari 800</fullname>
         <path>%ROMPATH%/atari800</path>
-        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
+        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .car .CAR .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
         <command label="Atari800">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/atari800_libretro.so %ROM%</command>
         <command label="Atari800 (Standalone)">%EMULATOR_ATARI800% %ROM%</command>
         <platform>atari800</platform>
diff --git a/resources/systems/windows/es_systems.xml b/resources/systems/windows/es_systems.xml
index c5799f763..c0a76c05c 100644
--- a/resources/systems/windows/es_systems.xml
+++ b/resources/systems/windows/es_systems.xml
@@ -145,7 +145,7 @@
         <name>atari5200</name>
         <fullname>Atari 5200</fullname>
         <path>%ROMPATH%\atari5200</path>
-        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .cas .CAS .cdm .CDM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
+        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .car .CAR .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
         <command label="a5200">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\a5200_libretro.dll %ROM%</command>
         <command label="Atari800">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\atari800_libretro.dll %ROM%</command>
         <command label="Atari800 (Standalone)">%STARTDIR%=%EMUDIR% %EMULATOR_ATARI800% %ROM%</command>
@@ -165,7 +165,7 @@
         <name>atari800</name>
         <fullname>Atari 800</fullname>
         <path>%ROMPATH%\atari800</path>
-        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
+        <extension>.a52 .A52 .atr .ATR .atx .ATX .bin .BIN .car .CAR .cas .CAS .cdm .CDM .rom .ROM .xex .XEX .xfd .XFD .7z .7Z .zip .ZIP</extension>
         <command label="Atari800">%STARTDIR%=%EMUDIR% %EMULATOR_RETROARCH% -L %CORE_RETROARCH%\atari800_libretro.dll %ROM%</command>
         <command label="Atari800 (Standalone)">%STARTDIR%=%EMUDIR% %EMULATOR_ATARI800% %ROM%</command>
         <platform>atari800</platform>