diff --git a/lib/http2.c b/lib/http2.c
index cfb7a0d0ab..c6e90e1ddb 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -659,7 +659,7 @@ static nghttp2_settings_entry settings[] = {
   { NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, NGHTTP2_INITIAL_WINDOW_SIZE },
 };
 
-#define H2_BUFSIZE 8192
+#define H2_BUFSIZE 32768
 
 static void freestreamentry(void *freethis)
 {