diff --git a/rust/src/http2/http2.rs b/rust/src/http2/http2.rs
index edf151f67e..3256d0bd06 100644
--- a/rust/src/http2/http2.rs
+++ b/rust/src/http2/http2.rs
@@ -42,6 +42,7 @@ use suricata_sys::sys::{
     AppLayerParserState, AppProto, SCAppLayerForceProtocolChange,
     SCAppLayerParserConfParserEnabled, SCAppLayerParserRegisterLogger,
     SCAppLayerProtoDetectConfProtoDetectionEnabled, SCFileFlowFlagsToFlags,
+    SCHTTP2MimicHttp1Request,
 };
 
 static mut ALPROTO_HTTP2: AppProto = ALPROTO_UNKNOWN;
@@ -1431,13 +1432,6 @@ unsafe extern "C" fn http2_probing_parser_tc(
     return ALPROTO_UNKNOWN;
 }
 
-// Extern functions operating on HTTP2.
-extern "C" {
-    pub fn HTTP2MimicHttp1Request(
-        orig_state: *mut std::os::raw::c_void, new_state: *mut std::os::raw::c_void,
-    );
-}
-
 // Suppress the unsafe warning here as creating a state for an app-layer
 // is typically not unsafe.
 #[allow(clippy::not_unsafe_ptr_arg_deref)]
@@ -1450,7 +1444,7 @@ extern "C" fn http2_state_new(
     if !orig_state.is_null() {
         //we could check ALPROTO_HTTP1 == orig_proto
         unsafe {
-            HTTP2MimicHttp1Request(orig_state, r);
+            SCHTTP2MimicHttp1Request(orig_state, r);
         }
     }
     return r;
diff --git a/rust/sys/src/sys.rs b/rust/sys/src/sys.rs
index b44d540026..9f8f8c826f 100644
--- a/rust/sys/src/sys.rs
+++ b/rust/sys/src/sys.rs
@@ -829,6 +829,11 @@ extern "C" {
         event_name: *const ::std::os::raw::c_char, table: *mut SCEnumCharMap, event_id: *mut u8,
     ) -> ::std::os::raw::c_int;
 }
+extern "C" {
+    pub fn SCHTTP2MimicHttp1Request(
+        arg1: *mut ::std::os::raw::c_void, arg2: *mut ::std::os::raw::c_void,
+    );
+}
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 pub struct MpmPattern_ {
diff --git a/src/app-layer-http2.c b/src/app-layer-http2.c
index b480deaf5b..fc299cdaec 100644
--- a/src/app-layer-http2.c
+++ b/src/app-layer-http2.c
@@ -69,7 +69,7 @@ void RegisterHTTP2Parsers(void)
 #endif
 }
 
-void HTTP2MimicHttp1Request(void *alstate_orig, void *h2s)
+void SCHTTP2MimicHttp1Request(void *alstate_orig, void *h2s)
 {
     htp_tx_t *h1tx = HtpGetTxForH2(alstate_orig);
     if (h2s == NULL || h1tx == NULL) {
diff --git a/src/app-layer-http2.h b/src/app-layer-http2.h
index b2d4d0ef77..371f8afdde 100644
--- a/src/app-layer-http2.h
+++ b/src/app-layer-http2.h
@@ -26,6 +26,6 @@
 
 void RegisterHTTP2Parsers(void);
 
-void HTTP2MimicHttp1Request(void *, void *);
+void SCHTTP2MimicHttp1Request(void *, void *);
 
 #endif /* SURICATA_APP_LAYER_HTTP2_H */
diff --git a/src/bindgen.h b/src/bindgen.h
index c356208f0f..80d5bc56ba 100644
--- a/src/bindgen.h
+++ b/src/bindgen.h
@@ -52,6 +52,7 @@
 #include "app-layer-parser.h"
 #include "app-layer-register.h"
 #include "app-layer-events.h"
+#include "app-layer-http2.h"
 
 #include "util-mpm.h"
 #include "util-file.h"