diff --git a/src/stream.h b/src/stream.h
index c827343e99..7c9d19c4dc 100644
--- a/src/stream.h
+++ b/src/stream.h
@@ -32,7 +32,8 @@
 #define STREAM_TOCLIENT     0x08
 #define STREAM_GAP          0x10
 
-#define MSG_DATA_SIZE       512
+/** size of the data chunks sent to the app layer parser. */
+#define MSG_DATA_SIZE       2048
 
 #define STREAMQUEUE_FLAG_INIT    0x01