diff --git a/resources/systems/macos/es_systems.xml b/resources/systems/macos/es_systems.xml
index fe3c469fc..c1afadd50 100644
--- a/resources/systems/macos/es_systems.xml
+++ b/resources/systems/macos/es_systems.xml
@@ -1035,7 +1035,7 @@
         <name>nds</name>
         <fullname>Nintendo DS</fullname>
         <path>%ROMPATH%/nds</path>
-        <extension>.bin .BIN .nds .NDS .7z .7Z .zip .ZIP</extension>
+        <extension>.app .APP .bin .BIN .nds .NDS .7z .7Z .zip .ZIP</extension>
         <command label="DeSmuME">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/desmume_libretro.dylib %ROM%</command>
         <command label="DeSmuME 2015">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/desmume2015_libretro.dylib %ROM%</command>
         <command label="melonDS">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/melonds_libretro.dylib %ROM%</command>
diff --git a/resources/systems/unix/es_systems.xml b/resources/systems/unix/es_systems.xml
index d71b763b4..db2c78dc6 100644
--- a/resources/systems/unix/es_systems.xml
+++ b/resources/systems/unix/es_systems.xml
@@ -1070,7 +1070,7 @@
         <name>nds</name>
         <fullname>Nintendo DS</fullname>
         <path>%ROMPATH%/nds</path>
-        <extension>.bin .BIN .nds .NDS .7z .7Z .zip .ZIP</extension>
+        <extension>.app .APP .bin .BIN .nds .NDS .7z .7Z .zip .ZIP</extension>
         <command label="DeSmuME">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/desmume_libretro.so %ROM%</command>
         <command label="DeSmuME 2015">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/desmume2015_libretro.so %ROM%</command>
         <command label="DeSmuME (Standalone)">%EMULATOR_DESMUME% %ROM%</command>
diff --git a/resources/systems/windows/es_systems.xml b/resources/systems/windows/es_systems.xml
index 44ee881c6..adcb7d067 100644
--- a/resources/systems/windows/es_systems.xml
+++ b/resources/systems/windows/es_systems.xml
@@ -1074,7 +1074,7 @@
         <name>nds</name>
         <fullname>Nintendo DS</fullname>
         <path>%ROMPATH%\nds</path>
-        <extension>.bin .BIN .nds .NDS .7z .7Z .zip .ZIP</extension>
+        <extension>.app .APP .bin .BIN .nds .NDS .7z .7Z .zip .ZIP</extension>
         <command label="DeSmuME">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\desmume_libretro.dll %ROM%</command>
         <command label="DeSmuME 2015">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\desmume2015_libretro.dll %ROM%</command>
         <command label="melonDS">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\melonds_libretro.dll %ROM%</command>