diff --git a/warc-tiny b/warc-tiny
index 85ede06..3ffc767 100755
--- a/warc-tiny
+++ b/warc-tiny
@@ -142,7 +142,7 @@ def iter_warc(f):
 			# Read WARC header
 			while b'\r\n\r\n' not in buf:
 				try:
-					buf = buf + fp.read(4096)
+					buf = buf + fp.read(16777216)
 				except EOFError:
 					break
 				if not buf: