diff --git a/gtk/CMakeLists.txt b/gtk/CMakeLists.txt
index 01d011ee..29836d34 100644
--- a/gtk/CMakeLists.txt
+++ b/gtk/CMakeLists.txt
@@ -17,15 +17,15 @@ option(DANGEROUS_HACKS "Allow dangerous hacks to be used" ON)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-set(CMAKE_INSTALL_DATADIR "snes9x" CACHE STRING "cheats.bml directory")
-set(CMAKE_INSTALL_LOCALEDIR locale CACHE STRING "Locale directory")
+
+include(GNUInstallDirs)
 
 if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE "Release" CACHE STRING "One of: Debug Release RelWithDebInfo MinSizeRel" FORCE)
 endif(NOT CMAKE_BUILD_TYPE)
 
-string(APPEND DATADIR ${CMAKE_INSTALL_PREFIX} "/" ${CMAKE_INSTALL_DATAROOTDIR} "/" ${CMAKE_INSTALL_DATADIR})
-string(APPEND LOCALEDIR ${CMAKE_INSTALL_PREFIX} "/" ${CMAKE_INSTALL_DATAROOTDIR} "/" ${CMAKE_INSTALL_LOCALEDIR})
+string(APPEND DATADIR ${CMAKE_INSTALL_PREFIX} "/" ${CMAKE_INSTALL_DATAROOTDIR} "/snes9x")
+string(APPEND LOCALEDIR ${CMAKE_INSTALL_PREFIX} "/" ${CMAKE_INSTALL_DATAROOTDIR} "/locale" )
 add_compile_definitions(HAVE_LIBPNG
                         ZLIB SNES9X_GTK
                         NETPLAY_SUPPORT
@@ -406,7 +406,7 @@ if(USE_SLANG)
 endif()
 
 install(TARGETS snes9x-gtk)
-install(FILES ../data/cheats.bml DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${CMAKE_INSTALL_DATADIR})
+install(FILES ../data/cheats.bml DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/snes9x)
 install(FILES data/snes9x-gtk.desktop DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/applications)
 install(FILES data/snes9x_16x16.png DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/16x16/apps RENAME snes9x.png)
 install(FILES data/snes9x_24x24.png DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/24x24/apps RENAME snes9x.png)