diff --git a/modules/insticatorBidAdapter.js b/modules/insticatorBidAdapter.js
index 1f389aed27a..4dfda753e39 100644
--- a/modules/insticatorBidAdapter.js
+++ b/modules/insticatorBidAdapter.js
@@ -189,36 +189,6 @@ function validateSizes(sizes) {
   );
 }
 
-function base64Encode(string) {
-  string = String(string);
-
-  if (typeof window.btoa !== 'undefined') {
-    return window.btoa(string)
-  }
-
-  // Polyfill
-  var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
-  var bitmap;
-  var a;
-  var b;
-  var c;
-  var result = '';
-  var i = 0;
-  var rest = string.length % 3;
-
-  for (; i < string.length;) {
-    if ((a = string.charCodeAt(i++)) > 255 ||
-      (b = string.charCodeAt(i++)) > 255 ||
-      (c = string.charCodeAt(i++)) > 255) { throw new TypeError("Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the Latin1 range."); }
-
-    bitmap = (a << 16) | (b << 8) | c;
-    result += b64.charAt(bitmap >> 18 & 63) + b64.charAt(bitmap >> 12 & 63) +
-      b64.charAt(bitmap >> 6 & 63) + b64.charAt(bitmap & 63);
-  }
-
-  return rest ? result.slice(0, rest - 3) + '==='.substring(rest) : result;
-}
-
 export const spec = {
   code: BIDDER_CODE,
   supportedMediaTypes: [BANNER],
@@ -299,15 +269,6 @@ export const spec = {
 
     return syncs;
   },
-
-  onBidWon: function(winObj) {
-    const cpm = winObj.cpm;
-
-    winObj.ad = winObj.ad.replace(
-      /\${AUCTION_PRICE:B64}/,
-      base64Encode(cpm)
-    );
-  },
 };
 
 registerBidder(spec);