diff --git a/src/detect-engine.c b/src/detect-engine.c
index b2e2165844..5bbaafc555 100644
--- a/src/detect-engine.c
+++ b/src/detect-engine.c
@@ -308,6 +308,27 @@ void DetectEngineRegisterAppInspectionEngine(AppProto alproto,
     return;
 }
 
+void DetectAppLayerInspectEngineRegister(AppProto alproto,
+        uint32_t dir, int32_t sm_list,
+        int (*Callback)(ThreadVars *tv,
+            DetectEngineCtx *de_ctx,
+            DetectEngineThreadCtx *det_ctx,
+            Signature *sig, Flow *f,
+            uint8_t flags, void *alstate,
+            void *tx, uint64_t tx_id))
+{
+    BUG_ON(!(dir == SIG_FLAG_TOSERVER || dir == SIG_FLAG_TOCLIENT));
+
+    int direction;
+    if (dir == SIG_FLAG_TOSERVER) {
+        direction = 0;
+    } else {
+        direction = 1;
+    }
+
+    DetectEngineRegisterAppInspectionEngine(alproto, direction, sm_list, Callback);
+}
+
 int DetectEngineAppInspectionEngine2Signature(Signature *s)
 {
     DetectEngineAppInspectionEngine *t = g_app_inspect_engines;
diff --git a/src/detect-engine.h b/src/detect-engine.h
index ea888cf426..4eb48a353e 100644
--- a/src/detect-engine.h
+++ b/src/detect-engine.h
@@ -96,6 +96,15 @@ void DetectEngineRegisterAppInspectionEngine(AppProto alproto,
                                                              Signature *sig, Flow *f,
                                                              uint8_t flags, void *alstate,
                                                              void *tx, uint64_t tx_id));
+void DetectAppLayerInspectEngineRegister(AppProto alproto,
+                                 uint32_t dir,
+                                 int32_t sm_list,
+                                 int (*Callback)(ThreadVars *tv,
+                                     DetectEngineCtx *de_ctx,
+                                     DetectEngineThreadCtx *det_ctx,
+                                     Signature *sig, Flow *f,
+                                     uint8_t flags, void *alstate,
+                                     void *tx, uint64_t tx_id));
 
 int DetectEngineAppInspectionEngine2Signature(Signature *s);