diff --git a/lib/coffeescript/command.js b/lib/coffeescript/command.js
index be3cd04921..0f7ba90329 100644
--- a/lib/coffeescript/command.js
+++ b/lib/coffeescript/command.js
@@ -135,12 +135,12 @@
 
   makePrelude = function(requires) {
     return requires.map(function(module) {
-      var _, match, name;
+      var full, match, name;
       if (match = module.match(/^(.*)=(.*)$/)) {
-        [_, name, module] = match;
+        [full, name, module] = match;
       }
       name || (name = helpers.baseFileName(module, true, useWinPathSep));
-      return `${name} = require('${module}')`;
+      return `global['${name}'] = require('${module}')`;
     }).join(';');
   };
 
diff --git a/src/command.coffee b/src/command.coffee
index 0c5c1d49b0..fc0b318d42 100644
--- a/src/command.coffee
+++ b/src/command.coffee
@@ -125,9 +125,9 @@ exports.run = ->
 
 makePrelude = (requires) ->
   requires.map (module) ->
-    [_, name, module] = match if match = module.match(/^(.*)=(.*)$/)
-    name ||= helpers.baseFileName module, yes, useWinPathSep
-    "#{name} = require('#{module}')"
+    [full, name, module] = match if match = module.match(/^(.*)=(.*)$/)
+    name or= helpers.baseFileName module, yes, useWinPathSep
+    "global['#{name}'] = require('#{module}')"
   .join ';'
 
 # Compile a path, which could be a script or a directory. If a directory