diff --git a/build/linux/tic80.desktop.in b/build/linux/tic80.desktop.in
index e9e5fef1d..e01298e4e 100644
--- a/build/linux/tic80.desktop.in
+++ b/build/linux/tic80.desktop.in
@@ -1,11 +1,10 @@
 [Desktop Entry]
-Version=1.0
 Name=TIC-80
 Comment=Fantasy computer for making, playing and sharing tiny games.
-Exec=tic80 %U
+Exec=tic80 %f
 Icon=tic80
 Terminal=false
 Type=Application
-Categories=Education
-MimeType=application/x-tic80-item;
+Categories=Game;Emulator;
+MimeType=application/x-tic80-item;image/png;
 GenericName=TIC-80
diff --git a/build/linux/tic80.xml b/build/linux/tic80.xml
index 0166c0a9b..bf83e5c4f 100644
--- a/build/linux/tic80.xml
+++ b/build/linux/tic80.xml
@@ -1,14 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
  <mime-type type="application/x-tic80-item">
-    <sub-class-of type="text/xml"/>
-    <sub-class-of type="application/xml"/>
-    <comment>Fantasy computer for making, playing and sharing tiny games.</comment>
+    <comment>TIC-80 cartridge</comment>
     <icon>tic80</icon>
-    <glob pattern=".dmx" weight="50" />
-    <magic priority="90">
-          <match type="string" offset="2" value="!DOCTYPE DBM"/>
-    </magic>
-    <root-XML localName="tic80" />
+    <glob pattern="*.tic"/>
   </mime-type>
  </mime-info>
diff --git a/cmake/sdl.cmake b/cmake/sdl.cmake
index 7c09df7b0..513c0ee2d 100644
--- a/cmake/sdl.cmake
+++ b/cmake/sdl.cmake
@@ -232,10 +232,11 @@ if(BUILD_SDL)
         install(TARGETS ${TIC80_TARGET} DESTINATION bin)
 
         SET(TIC80_DESKTOP_DIR     "share/applications/")
+        SET(TIC80_MIME_DIR        "share/mime/packages/")
         SET(TIC80_PIXMAPS_DIR     "share/icons/")
 
         install (FILES ${PROJECT_SOURCE_DIR}/build/linux/tic80.desktop DESTINATION ${TIC80_DESKTOP_DIR})
-        install (FILES ${PROJECT_SOURCE_DIR}/build/linux/tic80.xml DESTINATION ${TIC80_DESKTOP_DIR})
+        install (FILES ${PROJECT_SOURCE_DIR}/build/linux/tic80.xml DESTINATION ${TIC80_MIME_DIR})
         install (FILES ${PROJECT_SOURCE_DIR}/build/linux/tic80.png DESTINATION ${TIC80_PIXMAPS_DIR})
 
     endif()