diff --git a/codec-http2/src/main/java/io/netty/handler/codec/http2/HttpConversionUtil.java b/codec-http2/src/main/java/io/netty/handler/codec/http2/HttpConversionUtil.java
index 7a32de59f7..924361435d 100644
--- a/codec-http2/src/main/java/io/netty/handler/codec/http2/HttpConversionUtil.java
+++ b/codec-http2/src/main/java/io/netty/handler/codec/http2/HttpConversionUtil.java
@@ -619,7 +619,7 @@ public final class HttpConversionUtil {
             translations = request ? REQUEST_HEADER_TRANSLATIONS : RESPONSE_HEADER_TRANSLATIONS;
         }
 
-        public void translateHeaders(Iterable<Entry<CharSequence, CharSequence>> inputHeaders) throws Http2Exception {
+        void translateHeaders(Iterable<Entry<CharSequence, CharSequence>> inputHeaders) throws Http2Exception {
             // lazily created as needed
             StringBuilder cookies = null;