diff --git a/src/index.js b/src/index.js
index 37d3242..009e565 100644
--- a/src/index.js
+++ b/src/index.js
@@ -446,7 +446,7 @@ module.exports = (req, res, logFacilities, config, next) => {
   };
 
   //req.body
-  function readableHandlerPredict() {
+  const readableHandlerPredict = () => {
     try {
       if (req._readableState.buffer.head !== null) {
         requestBody = Buffer.from(req._readableState.buffer.head.data);
@@ -457,7 +457,7 @@ module.exports = (req, res, logFacilities, config, next) => {
     }
     if (!requestBody) requestBody = Buffer.alloc(0);
     modSecurityCallback();
-  }
+  };
 
   let chunkBuffer = [];
   let chunkBufferLength = Math.min(