diff --git a/src/stream.h b/src/stream.h
index 51ae39daf2..4821dc9981 100644
--- a/src/stream.h
+++ b/src/stream.h
@@ -27,7 +27,7 @@
 #include "decode.h"
 #include "stream-tcp-private.h"
 
-#define STREAM_FLAGS_FOR_PACKET(p) PKT_IS_TOSERVER((p)) ? STREAM_TOSERVER : STREAM_TOCLIENT
+#define STREAM_FLAGS_FOR_PACKET(p) (PKT_IS_TOSERVER((p)) ? STREAM_TOSERVER : STREAM_TOCLIENT)
 
 #define STREAM_DUMP_TOCLIENT BIT_U8(1)
 #define STREAM_DUMP_TOSERVER BIT_U8(2)