Index: fceux.desktop
--- fceux.desktop.orig
+++ fceux.desktop
@@ -5,8 +5,8 @@ Name=Fceux
 GenericName=NES/Famicom emulator
 NoDisplay=false
 Comment=Emulate NES ROMs
-Exec=/usr/bin/fceux %f
-Icon=/usr/share/pixmaps/fceux1.png
+Exec=${PREFIX}/bin/fceux %f
+Icon=${PREFIX}/share/pixmaps/fceux1.png
 Terminal=false
 MimeType=application/x-nes-rom
 Categories=Game;Emulator;