diff --git a/lib/query.js b/lib/query.js
index b0961a2f97c..714ceb38c54 100644
--- a/lib/query.js
+++ b/lib/query.js
@@ -188,7 +188,15 @@ Query.prototype.toConstructor = function toConstructor() {
 
   p.options = {};
 
-  p.setOptions(this.options);
+  // Need to handle `sort()` separately because entries-style `sort()` syntax
+  // `sort([['prop1', 1]])` confuses mquery into losing the outer nested array.
+  // See gh-8159
+  const options = Object.assign({}, this.options);
+  if (options.sort != null) {
+    p.sort(options.sort);
+    delete options.sort;
+  }
+  p.setOptions(options);
 
   p.op = this.op;
   p._conditions = utils.clone(this._conditions);
diff --git a/package.json b/package.json
index a363e9ab393..8c25adcdf03 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "mongodb": "3.3.2",
     "mongoose-legacy-pluralize": "1.0.2",
     "mpath": "0.6.0",
-    "mquery": "3.2.1",
+    "mquery": "3.2.2",
     "ms": "2.1.2",
     "regexp-clone": "1.0.0",
     "safe-buffer": "5.1.2",