diff --git a/rust/src/applayer.rs b/rust/src/applayer.rs
index c7a434c60e..da8def4a9e 100644
--- a/rust/src/applayer.rs
+++ b/rust/src/applayer.rs
@@ -534,10 +534,24 @@ pub type GetStateNameById = unsafe extern "C" fn(c_int, u8) -> *const c_char;
 #[allow(unused_doc_comments)]
 /// cbindgen:ignore
 extern "C" {
-    pub fn AppLayerRegisterProtocolDetection(parser: *const RustParser, enable_default: c_int) -> AppProto;
     pub fn AppLayerRegisterParser(parser: *const RustParser, alproto: AppProto) -> c_int;
 }
 
+use suricata_sys::sys::{AppLayerProtocolDetect, SCAppLayerRegisterProtocolDetection};
+
+pub fn AppLayerRegisterProtocolDetection(parser: &RustParser, enable_default: c_int) -> AppProto {
+    let det = AppLayerProtocolDetect{
+        name: parser.name,
+        default_port: parser.default_port,
+        ip_proto: parser.ipproto,
+        ProbeTS: parser.probe_ts,
+        ProbeTC: parser.probe_tc,
+        min_depth: parser.min_depth,
+        max_depth: parser.max_depth,
+    };
+    unsafe {SCAppLayerRegisterProtocolDetection(&det, enable_default) }
+}
+
 
 // Defined in app-layer-parser.h
 pub const APP_LAYER_PARSER_NO_INSPECTION : u16 = BIT_U16!(1);
diff --git a/rust/sys/src/sys.rs b/rust/sys/src/sys.rs
index fed5b460b7..3cf71e047b 100644
--- a/rust/sys/src/sys.rs
+++ b/rust/sys/src/sys.rs
@@ -939,6 +939,38 @@ extern "C" {
 extern "C" {
     pub fn FileApplyTxFlags(txd: *const AppLayerTxData, direction: u8, file: *mut File);
 }
+#[doc = " First part of AppLayerParser, needed only for protocol detection"]
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct AppLayerProtocolDetect {
+    #[doc = " name of the app-layer"]
+    pub name: *const ::std::os::raw::c_char,
+    #[doc = " default port(s)"]
+    pub default_port: *const ::std::os::raw::c_char,
+    #[doc = " ip protocol : TCP or UDP"]
+    pub ip_proto: u8,
+    #[doc = " probing parser to server"]
+    pub ProbeTS: ProbingParserFPtr,
+    #[doc = " probing parser to client"]
+    pub ProbeTC: ProbingParserFPtr,
+    pub min_depth: u16,
+    pub max_depth: u16,
+}
+impl Default for AppLayerProtocolDetect {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+extern "C" {
+    #[doc = " \\brief App layer protocol detection function.\n\n \\param parser The parser declaration structure.\n \\param enable_default A boolean to indicate if default port configuration should be used if none given\n\n \\retval The AppProto constant if successful. On error, this function never returns."]
+    pub fn SCAppLayerRegisterProtocolDetection(
+        parser: *const AppLayerProtocolDetect, enable_default: ::std::os::raw::c_int,
+    ) -> AppProto;
+}
 extern "C" {
     pub fn SCAppLayerRegisterParserAlias(
         proto_name: *const ::std::os::raw::c_char, proto_alias: *const ::std::os::raw::c_char,
diff --git a/src/app-layer-register.c b/src/app-layer-register.c
index 48c8442b22..a69caa4b70 100644
--- a/src/app-layer-register.c
+++ b/src/app-layer-register.c
@@ -36,7 +36,8 @@
 
 static const char * IpProtoToString(int ip_proto);
 
-AppProto AppLayerRegisterProtocolDetection(const struct AppLayerParser *p, int enable_default)
+AppProto SCAppLayerRegisterProtocolDetection(
+        const struct AppLayerProtocolDetect *p, int enable_default)
 {
     AppProto alproto;
     const char *ip_proto_str = NULL;
diff --git a/src/app-layer-register.h b/src/app-layer-register.h
index 6294496c1a..33cd49a22d 100644
--- a/src/app-layer-register.h
+++ b/src/app-layer-register.h
@@ -78,6 +78,22 @@ typedef struct AppLayerParser {
     AppLayerParserGetStateNameByIdFn GetStateNameById;
 } AppLayerParser;
 
+/// First part of AppLayerParser, needed only for protocol detection
+typedef struct AppLayerProtocolDetect {
+    /// name of the app-layer
+    const char *name;
+    /// default port(s)
+    const char *default_port;
+    /// ip protocol : TCP or UDP
+    uint8_t ip_proto;
+    /// probing parser to server
+    ProbingParserFPtr ProbeTS;
+    /// probing parser to client
+    ProbingParserFPtr ProbeTC;
+    uint16_t min_depth;
+    uint16_t max_depth;
+} AppLayerProtocolDetect;
+
 /**
  * \brief App layer protocol detection function.
  *
@@ -86,7 +102,8 @@ typedef struct AppLayerParser {
  *
  * \retval The AppProto constant if successful. On error, this function never returns.
  */
-AppProto AppLayerRegisterProtocolDetection(const struct AppLayerParser *parser, int enable_default);
+AppProto SCAppLayerRegisterProtocolDetection(
+        const struct AppLayerProtocolDetect *parser, int enable_default);
 
 /**
  * \brief App layer protocol registration function.