diff --git a/index.js b/index.js
index 92df377..b897f92 100644
--- a/index.js
+++ b/index.js
@@ -7,7 +7,7 @@ var Combine = require('ordered-read-streams');
 var unique = require('unique-stream');
 
 var glob = require('glob');
-var minimatch = require('minimatch');
+var Minimatch = require('minimatch').Minimatch;
 var glob2base = require('glob2base');
 var path = require('path');
 
@@ -25,7 +25,7 @@ var gs = {
 
     // remove path relativity to make globs make sense
     ourGlob = unrelative(opt.cwd, ourGlob);
-    negatives = negatives.map(unrelative.bind(null, opt.cwd));
+    negatives = negatives.map(unrelative.bind(null, opt.cwd)).map(toMatcher.bind(null, opt));
 
     // create globbing stuff
     var globber = new glob.Glob(ourGlob, opt);
@@ -51,7 +51,7 @@ var gs = {
     return stream;
 
     function filterNegatives(filename, enc, cb) {
-      var matcha = isMatch.bind(null, filename, opt);
+      var matcha = isMatch.bind(null, filename);
       if (negatives.every(matcha)) {
         cb(null, filename); // pass
       } else {
@@ -99,9 +99,9 @@ var gs = {
   }
 };
 
-function isMatch(file, opt, pattern) {
-  if (typeof pattern === 'string') return minimatch(file.path, pattern, opt);
-  if (pattern instanceof RegExp) return pattern.test(file.path);
+function isMatch(file, matcher) {
+  if (matcher instanceof Minimatch) return matcher.match(file.path);
+  if (matcher instanceof RegExp) return matcher.test(file.path);
   return true; // unknown glob type?
 }
 
@@ -112,6 +112,7 @@ function isNegative(pattern) {
 }
 
 function unrelative(cwd, glob) {
+  if (typeof glob !== 'string') return glob;
   var mod = '';
   if (glob[0] === '!') {
     mod = glob[0];
@@ -130,4 +131,9 @@ function toGlob(obj) {
   return obj.glob;
 }
 
+function toMatcher(opt, glob) {
+  if (typeof glob === 'string') return new Minimatch(glob, opt);
+  return glob;
+}
+
 module.exports = gs;
diff --git a/test/main.js b/test/main.js
index d21283c..41e9fe2 100644
--- a/test/main.js
+++ b/test/main.js
@@ -456,5 +456,23 @@ describe('glob-stream', function() {
       });
     });
 
+    it('should handle RegExps as negative matchers', function(done) {
+      var stream = gs.create(['./fixtures/stuff/*.dmc', /run/], {cwd: __dirname});
+      should.exist(stream);
+      stream.on('error', function(err) {
+        throw err;
+      });
+      stream.on('data', function(file) {
+        should.exist(file);
+        should.exist(file.path);
+        should.exist(file.base);
+        should.exist(file.cwd);
+        String(file.cwd).should.equal(__dirname);
+        String(file.base).should.equal(join(__dirname, 'fixtures', 'stuff'+sep));
+        String(join(file.path,'')).should.equal(join(__dirname, './fixtures/stuff/run.dmc'));
+        done();
+      });
+    });
+
   });
 });