diff --git a/index.js b/index.js
index 09dde64..679b546 100644
--- a/index.js
+++ b/index.js
@@ -21,6 +21,8 @@ module.exports = function globParent(str, opts) {
     str = str.replace(backslash, slash);
   }
 
+  var win32Root = isWin32 && /^([a-zA-Z]:\/)/.exec(str);
+
   // special case for strings ending in enclosure containing path separator
   if (isEnclosure(str)) {
     str += slash;
@@ -34,8 +36,12 @@ module.exports = function globParent(str, opts) {
     str = pathPosixDirname(str);
   } while (isGlobby(str));
 
-  // remove escape chars and return result
-  return str.replace(escaped, '$1');
+  // remove escape chars and preserve a drive root used as the parent
+  str = str.replace(escaped, '$1');
+  if (win32Root && str === win32Root[0].slice(0, -1)) {
+    return win32Root[0];
+  }
+  return str;
 };
 
 function isEnclosure(str) {
diff --git a/test/index.test.js b/test/index.test.js
index 5889412..13ff9c5 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -252,6 +252,23 @@ describe('glob2base test patterns', function () {
 
 if (isWin32) {
   describe('technically invalid windows globs', function () {
+    it('should preserve a drive root when it is the static parent', function (done) {
+      var options = { flipBackslashes: false };
+
+      expect(gp('C:/', options)).toEqual('C:/');
+      expect(gp('C:/.', options)).toEqual('C:/');
+      expect(gp('C:/*', options)).toEqual('C:/');
+      expect(gp('C:/./*', options)).toEqual('C:/.');
+      expect(gp('C://', options)).toEqual('C:/');
+      expect(gp('C://*', options)).toEqual('C:/');
+      expect(gp('C:/file.js', options)).toEqual('C:/');
+      expect(gp('C:/dir/*.js', options)).toEqual('C:/dir');
+      expect(gp('C:\\')).toEqual('C:/');
+      expect(gp('C:\\*')).toEqual('C:/');
+
+      done();
+    });
+
     it('should manage simple globs with backslash path separator', function (done) {
       expect(gp('C:\\path\\*.js')).toEqual('C:/path');