diff --git a/lib/coffee-script.js b/lib/coffee-script.js
index 12ca09e2..d67b745c 100755
--- a/lib/coffee-script.js
+++ b/lib/coffee-script.js
@@ -47,7 +47,7 @@
     while (root.parent) {
       root = root.parent;
     }
-    root.filename = fs.realpathSync(options.fileName || '.');
+    root.filename = options.fileName ? fs.realpathSync(options.fileName) : '.';
     if (root.moduleCache) {
       root.moduleCache = {};
     }
@@ -59,7 +59,7 @@
   };
   exports.eval = function(code, options) {
     var __dirname, __filename;
-    __filename = options.fileName;
+    __filename = module.filename = options.fileName;
     __dirname = path.dirname(__filename);
     return eval(compile(code, options));
   };
diff --git a/src/coffee-script.coffee b/src/coffee-script.coffee
index 01710cd5..6c3b9c46 100755
--- a/src/coffee-script.coffee
+++ b/src/coffee-script.coffee
@@ -58,7 +58,7 @@ exports.run = (code, options) ->
   while root.parent
     root = root.parent
   # Set the filename.
-  root.filename = fs.realpathSync options.fileName or '.'
+  root.filename = if options.fileName then fs.realpathSync(options.fileName) else '.'
   # Clear the module cache.
   root.moduleCache = {} if root.moduleCache
   # Compile.
@@ -70,7 +70,7 @@ exports.run = (code, options) ->
 # Compile and evaluate a string of CoffeeScript (in a Node.js-like environment).
 # The CoffeeScript REPL uses this to run the input.
 exports.eval = (code, options) ->
-  __filename = options.fileName
+  __filename = module.filename = options.fileName
   __dirname  = path.dirname __filename
   eval compile code, options