diff --git a/lib/command.js b/lib/command.js
index 2ff464fe..43ac4914 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -82,13 +82,7 @@ module.exports = function (proto) {
    * @return {Object} gm
    */
 
-  proto.write = function write (name, callback) {
-    if (!callback) callback = name, name = null;
-
-    if ("function" !== typeof callback) {
-      throw new TypeError("gm().write() expects a callback function")
-    }
-
+  proto.write = function write (name) {
     if (!name) {
       return callback(TypeError("gm().write() expects a filename when writing new files"));
     }
@@ -96,10 +90,15 @@ module.exports = function (proto) {
     this.outname = name;
 
     var self = this;
-    this._preprocess(function (err) {
-      if (err) return callback(err);
-      self._spawn(self.args(), true, callback);
-    });
+
+    return new Promise(function writeResolution (resolve, reject) {
+      this._preprocess(function preprocessCallback (err) {
+        if (err) {
+          return reject(err)	
+        };
+        return self._spawn(self.args(), true, resolve);
+      });
+    })
   }
 
   /**