diff --git a/lib/types/urlencoded.js b/lib/types/urlencoded.js
index 687745f8..f2488344 100644
--- a/lib/types/urlencoded.js
+++ b/lib/types/urlencoded.js
@@ -208,19 +208,9 @@ function getCharset (req) {
  */
 
 function parameterCount (body, limit) {
-  var count = 0
-  var index = 0
+  var len = body.split('&').length
 
-  while ((index = body.indexOf('&', index)) !== -1) {
-    count++
-    index++
-
-    if (count === limit) {
-      return undefined
-    }
-  }
-
-  return count
+  return len > limit ? undefined : len - 1
 }
 
 /**
diff --git a/package.json b/package.json
index 16ff7df7..c2734d21 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,6 @@
     "lint": "eslint .",
     "test": "mocha --reporter spec --check-leaks test/",
     "test-ci": "nyc --reporter=lcovonly --reporter=text npm test",
-
     "test-cov": "nyc --reporter=html --reporter=text npm test"
   }
 }