diff --git a/src/detect-engine-proto.h b/src/detect-engine-proto.h
index 6008430be6..95089a23e7 100644
--- a/src/detect-engine-proto.h
+++ b/src/detect-engine-proto.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2007-2010 Open Information Security Foundation
+/* Copyright (C) 2007-2024 Open Information Security Foundation
  *
  * You can copy, redistribute or modify this Program under the terms of
  * the GNU General Public License version 2 as published by the Free
@@ -24,14 +24,13 @@
 #ifndef SURICATA_DETECT_PROTO_H
 #define SURICATA_DETECT_PROTO_H
 
-#define DETECT_PROTO_ANY            (1 << 0) /**< Indicate that given protocol
-                                              is considered as IP */
-#define DETECT_PROTO_ONLY_PKT       (1 << 1) /**< Indicate that we only care
-                                              about packet payloads. */
-#define DETECT_PROTO_ONLY_STREAM    (1 << 2) /**< Indicate that we only care
-                                              about stream payloads. */
-#define DETECT_PROTO_IPV4           (1 << 3) /**< IPv4 only */
-#define DETECT_PROTO_IPV6           (1 << 4) /**< IPv6 only */
+// clang-format off
+#define DETECT_PROTO_ANY               BIT_U8(0) /**< Indicate that given protocol is considered as IP */
+#define DETECT_PROTO_ONLY_PKT          BIT_U8(1) /**< Indicate that we only care about packet payloads. */
+#define DETECT_PROTO_ONLY_STREAM       BIT_U8(2) /**< Indicate that we only care about stream payloads. */
+#define DETECT_PROTO_IPV4              BIT_U8(3) /**< IPv4 only */
+#define DETECT_PROTO_IPV6              BIT_U8(4) /**< IPv6 only */
+// clang-format on
 
 typedef struct DetectProto_ {
     uint8_t proto[256/8]; /**< bit array for 256 protocol bits */