diff --git a/resources/systems/macos/es_systems.xml b/resources/systems/macos/es_systems.xml
index 184d3dcb1..9a3ef8108 100644
--- a/resources/systems/macos/es_systems.xml
+++ b/resources/systems/macos/es_systems.xml
@@ -5,7 +5,7 @@
         <name>3do</name>
         <fullname>3DO</fullname>
         <path>%ROMPATH%/3do</path>
-        <extension>.bin .BIN .chd .CHD .cue .CUE .iso .ISO .7z .7Z .zip .ZIP</extension>
+        <extension>.bin .BIN .chd .CHD .cue .CUE .iso .ISO</extension>
         <command label="Opera">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/opera_libretro.dylib %ROM%</command>
         <platform>3do</platform>
         <theme>3do</theme>
diff --git a/resources/systems/unix/es_systems.xml b/resources/systems/unix/es_systems.xml
index e060d9bc1..4fa4c7f96 100644
--- a/resources/systems/unix/es_systems.xml
+++ b/resources/systems/unix/es_systems.xml
@@ -5,7 +5,7 @@
         <name>3do</name>
         <fullname>3DO</fullname>
         <path>%ROMPATH%/3do</path>
-        <extension>.bin .BIN .chd .CHD .cue .CUE .iso .ISO .7z .7Z .zip .ZIP</extension>
+        <extension>.bin .BIN .chd .CHD .cue .CUE .iso .ISO</extension>
         <command label="Opera">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%/opera_libretro.so %ROM%</command>
         <platform>3do</platform>
         <theme>3do</theme>
diff --git a/resources/systems/windows/es_systems.xml b/resources/systems/windows/es_systems.xml
index ac92deb2d..cb7829a0a 100644
--- a/resources/systems/windows/es_systems.xml
+++ b/resources/systems/windows/es_systems.xml
@@ -5,7 +5,7 @@
         <name>3do</name>
         <fullname>3DO</fullname>
         <path>%ROMPATH%\3do</path>
-        <extension>.bin .BIN .chd .CHD .cue .CUE .iso .ISO .7z .7Z .zip .ZIP</extension>
+        <extension>.bin .BIN .chd .CHD .cue .CUE .iso .ISO</extension>
         <command label="Opera">%EMULATOR_RETROARCH% -L %CORE_RETROARCH%\opera_libretro.dll %ROM%</command>
         <platform>3do</platform>
         <theme>3do</theme>