diff --git a/data/core/keymap.lua b/data/core/keymap.lua
index 50eadec6..7f7c0fe2 100644
--- a/data/core/keymap.lua
+++ b/data/core/keymap.lua
@@ -5,7 +5,7 @@ keymap.modkeys = {}
 keymap.map = {}
 keymap.reverse_map = {}
 
-local macos = rawget(_G, "MACOS")
+local macos = PLATFORM == "Mac OS X"
 
 -- Thanks to mathewmariani, taken from his lite-macos github repository.
 local modkeys_os = require("core.modkeys-" .. (macos and "macos" or "generic"))
diff --git a/data/core/start.lua b/data/core/start.lua
index a84b4faa..0311774d 100644
--- a/data/core/start.lua
+++ b/data/core/start.lua
@@ -20,7 +20,7 @@ package.path = DATADIR .. '/?/init.lua;' .. package.path
 package.path = USERDIR .. '/?.lua;' .. package.path
 package.path = USERDIR .. '/?/init.lua;' .. package.path
 
-local dynamic_suffix = MACOS and 'lib' or (WINDOWS and 'dll' or 'so')
+local dynamic_suffix = PLATFORM == "Mac OS X" and 'lib' or (PLATFORM == "Windows" and 'dll' or 'so')
 package.cpath = DATADIR .. '/?.' .. dynamic_suffix .. ";" .. USERDIR .. '/?.' .. dynamic_suffix
 package.native_plugins = {}
 package.searchers[3] = function(modname)
diff --git a/src/main.c b/src/main.c
index 4b15ef34..ac97e698 100644
--- a/src/main.c
+++ b/src/main.c
@@ -141,15 +141,10 @@ init_lua:
 
   lua_pushboolean(L, true);
 #ifdef __APPLE__
-  lua_setglobal(L, "MACOS");
   enable_momentum_scroll();
   #ifdef MACOS_USE_BUNDLE
     set_macos_bundle_resources(L);
   #endif
-#elif _WIN32
-  lua_setglobal(L, "WINDOWS");
-#else
-  lua_setglobal(L, "LINUX");
 #endif
 
   const char *init_lite_code = \