diff --git a/lib/core/util.js b/lib/core/util.js
index fac3a8a9a37..0ef17a50fe0 100644
--- a/lib/core/util.js
+++ b/lib/core/util.js
@@ -977,14 +977,6 @@ class InflateStream extends stream.Transform {
   }
 }
 
-/**
- * @param {zlib.ZlibOptions} [zlibOptions]
- * @returns {InflateStream}
- */
-function createInflate (zlibOptions) {
-  return new InflateStream(zlibOptions)
-}
-
 /**
  * Return the list of transform streams necessary
  * to decode a body stream of the given content encoding.
@@ -1011,7 +1003,7 @@ function getDecoders (contentEncoding) {
         })
       )
     } else if (coding === 'deflate') {
-      decoders.push(createInflate({
+      decoders.push(new InflateStream({
         flush: zlib.constants.Z_SYNC_FLUSH,
         finishFlush: zlib.constants.Z_SYNC_FLUSH
       }))