diff --git a/lib/parse.js b/lib/parse.js
index 549de82e..d99d47ac 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -227,11 +227,8 @@ var splitKeyIntoSegments = function splitKeyIntoSegments(givenKey, options) {
         return [key];
     }
 
-    var brackets = /(\[[^[\]]*])/;
-    var child = /(\[[^[\]]*])/g;
-
-    var segment = brackets.exec(key);
-    var parent = segment ? key.slice(0, segment.index) : key;
+    var segmentStart = key.indexOf('[');
+    var parent = segmentStart > -1 ? key.slice(0, segmentStart) : key;
 
     var keys = [];
 
@@ -246,25 +243,40 @@ var splitKeyIntoSegments = function splitKeyIntoSegments(givenKey, options) {
     }
 
     var i = 0;
-    while ((segment = child.exec(key)) !== null && i < options.depth) {
+    var segmentEnd = segmentStart;
+    while (segmentEnd > -1 && i < options.depth) {
+        var bracketDepth = 1;
+        var j = segmentEnd + 1;
+        while (j < key.length && bracketDepth > 0) {
+            if (key.charAt(j) === '[') {
+                bracketDepth += 1;
+            } else if (key.charAt(j) === ']') {
+                bracketDepth -= 1;
+            }
+
+            j += 1;
+        }
+
+        var segment = bracketDepth === 0 ? key.slice(segmentEnd, j) : '[' + key.slice(segmentEnd) + ']';
         i += 1;
 
-        var segmentContent = segment[1].slice(1, -1);
+        var segmentContent = segment.slice(1, -1);
         if (!options.plainObjects && has.call(Object.prototype, segmentContent)) {
             if (!options.allowPrototypes) {
                 return;
             }
         }
 
-        keys[keys.length] = segment[1];
+        keys[keys.length] = segment;
+        segmentEnd = bracketDepth === 0 ? key.indexOf('[', j) : -1;
     }
 
-    if (segment) {
+    if (segmentEnd > -1) {
         if (options.strictDepth === true) {
             throw new RangeError('Input depth exceeded depth option of ' + options.depth + ' and strictDepth is true');
         }
 
-        keys[keys.length] = '[' + key.slice(segment.index) + ']';
+        keys[keys.length] = '[' + key.slice(segmentEnd) + ']';
     }
 
     return keys;