diff --git a/index.js b/index.js
index 0827449..398a7be 100644
--- a/index.js
+++ b/index.js
@@ -33,20 +33,17 @@ var formatOutput = function(report, file, options) {
 
 var cssLintPlugin = function(options) {
   options = options || {};
-
-  var ruleset = {};
-
   var rcLoader = new RcLoader('.csslintrc', options, { loader: 'async' });
-
-  // Build a list of all available rules
-  csslint.getRules().forEach(function(rule) {
-    ruleset[rule.id] = 1;
-  });
-
   return through.obj(function(file, enc, cb) {
     if (file.isNull()) return cb(null, file); // pass along
     if (file.isStream()) return cb(new gutil.PluginError('gulp-csslint: Streaming not supported'), file);
 
+    var ruleset = {};
+    // Build a list of all available rules
+    csslint.getRules().forEach(function(rule) {
+      ruleset[rule.id] = 1;
+    });
+
     var content = file.contents.toString(enc);
 
     if (!content) return cb(null, file); // pass along
diff --git a/test/fixtures/leaktest1.css b/test/fixtures/leaktest1.css
new file mode 100644
index 0000000..64f3242
--- /dev/null
+++ b/test/fixtures/leaktest1.css
@@ -0,0 +1,6 @@
+/*csslint duplicate-properties:false*/
+.no-leak-1{
+  height: 42px;
+  width: 20px;
+  height: 21px;
+}
diff --git a/test/fixtures/leaktest2.css b/test/fixtures/leaktest2.css
new file mode 100644
index 0000000..455c59a
--- /dev/null
+++ b/test/fixtures/leaktest2.css
@@ -0,0 +1,5 @@
+.no-leak-2{
+  height: 42px;
+  width: 20px;
+  height: 21px;
+}
diff --git a/test/main.js b/test/main.js
index d927726..257c06b 100644
--- a/test/main.js
+++ b/test/main.js
@@ -113,6 +113,29 @@ describe('gulp-csslint', function() {
       stream.end();
     });
 
+    it('should not leak options across files', function(done) {
+      var failedFiles = 0;
+      var file1 = getFile('fixtures/leaktest1.css');
+      var file2 = getFile('fixtures/leaktest2.css');
+      var stream = cssLintPlugin({});
+
+      stream.on('data', function(newFile) {
+        should.exist(newFile.csslint.success);
+        if (!newFile.csslint.success) {
+          failedFiles++;
+        }
+      });
+
+      stream.once('end', function() {
+        failedFiles.should.equal(1);
+        done();
+      });
+
+      stream.write(file1);
+      stream.write(file2);
+      stream.end();
+    });
+
     it('should support options', function(done) {
       var a = 0;