diff --git a/src/app-layer-parser.c b/src/app-layer-parser.c
index a807a9b640..c746588249 100644
--- a/src/app-layer-parser.c
+++ b/src/app-layer-parser.c
@@ -1288,7 +1288,7 @@ int8_t AppLayerParserGetSubStateProgressId(
                 return -1;
             }
             SCLogDebug("state:%s v:%u", state, v);
-            BUG_ON(v > 48);
+            BUG_ON(v >= APP_LAYER_MAX_PROGRESS);
             return (int8_t)v;
         }
     }
diff --git a/src/app-layer-parser.h b/src/app-layer-parser.h
index a95f270d3a..ebddac421c 100644
--- a/src/app-layer-parser.h
+++ b/src/app-layer-parser.h
@@ -71,6 +71,9 @@ typedef struct AppLayerGetFileState AppLayerGetFileState;
 
 int AppLayerParserProtoIsRegistered(uint8_t ipproto, AppProto alproto);
 
+/** progress values need to stay under this. */
+#define APP_LAYER_MAX_PROGRESS 48
+
 /***** transaction handling *****/
 
 int AppLayerParserSetup(void);
diff --git a/src/detect-engine-mpm.c b/src/detect-engine-mpm.c
index 1aae1b56a0..7803d00537 100644
--- a/src/detect-engine-mpm.c
+++ b/src/detect-engine-mpm.c
@@ -104,7 +104,7 @@ static void RegisterInternal(const char *name, int direction, int priority,
     DEBUG_VALIDATE_BUG_ON(AppLayerParserSupportsSubStates(alproto) && sub_state == 0);
     DEBUG_VALIDATE_BUG_ON(!AppLayerParserSupportsSubStates(alproto) && sub_state != 0);
 
-    BUG_ON(tx_min_progress >= 48);
+    BUG_ON(tx_min_progress >= APP_LAYER_MAX_PROGRESS);
 
     // must register GetData with PrefilterGenericMpmRegister
     BUG_ON(PrefilterRegister == PrefilterGenericMpmRegister && GetData == NULL);
diff --git a/src/detect-engine.c b/src/detect-engine.c
index 282814b3f9..ed1f36651d 100644
--- a/src/detect-engine.c
+++ b/src/detect-engine.c
@@ -207,7 +207,7 @@ static void AppLayerInspectEngineRegisterInternal(const char *name, AppProto alp
         DEBUG_VALIDATE_BUG_ON(AppLayerParserSupportsSubStates(alproto) && sub_state == 0);
         DEBUG_VALIDATE_BUG_ON(!AppLayerParserSupportsSubStates(alproto) && sub_state != 0);
     }
-    BUG_ON(progress >= 48);
+    BUG_ON(progress >= APP_LAYER_MAX_PROGRESS);
 
     DetectBufferTypeRegister(name);
     const int sm_list = DetectBufferTypeGetByName(name);
diff --git a/src/detect-parse.c b/src/detect-parse.c
index 2c055eb3d9..80c93b51e2 100644
--- a/src/detect-parse.c
+++ b/src/detect-parse.c
@@ -1479,7 +1479,7 @@ static int SigParseProtoHookApp(
             const int progress_ts = AppLayerParserGetStateIdByName(
                     IPPROTO_TCP /* TODO */, s->alproto, h, STREAM_TOSERVER);
             if (progress_ts >= 0) {
-                if (progress_ts >= 48) {
+                if (progress_ts >= APP_LAYER_MAX_PROGRESS) {
                     return -1;
                 }
                 s->flags |= SIG_FLAG_TOSERVER;
@@ -1487,7 +1487,7 @@ static int SigParseProtoHookApp(
             } else {
                 const int progress_tc = AppLayerParserGetStateIdByName(
                         IPPROTO_TCP /* TODO */, s->alproto, h, STREAM_TOCLIENT);
-                if (progress_tc < 0 || progress_tc >= 48) {
+                if (progress_tc < 0 || progress_tc >= APP_LAYER_MAX_PROGRESS) {
                     return -1;
                 }
                 s->flags |= SIG_FLAG_TOCLIENT;
diff --git a/src/detect.c b/src/detect.c
index 75258837c3..96ce6c1ef8 100644
--- a/src/detect.c
+++ b/src/detect.c
@@ -1564,12 +1564,12 @@ static int DetectRunTxInspectRule(ThreadVars *tv, DetectEngineCtx *de_ctx,
 static DetectTransaction GetDetectTx(const uint8_t ipproto, const AppProto alproto,
         const uint64_t tx_id, void *tx_ptr, const int tx_end_state, const uint8_t flow_flags)
 {
-    DEBUG_VALIDATE_BUG_ON(tx_end_state >= 48);
+    DEBUG_VALIDATE_BUG_ON(tx_end_state >= APP_LAYER_MAX_PROGRESS);
 
     AppLayerTxData *txd = AppLayerParserGetTxData(ipproto, alproto, tx_ptr);
     const uint8_t tx_progress =
             (uint8_t)AppLayerParserGetStateProgress(ipproto, alproto, tx_ptr, flow_flags);
-    DEBUG_VALIDATE_BUG_ON(tx_progress >= 48);
+    DEBUG_VALIDATE_BUG_ON(tx_progress >= APP_LAYER_MAX_PROGRESS);
 
     const uint8_t e_tx_end_state = txd->tx_type == 0                ? (uint8_t)tx_end_state
                                    : (flow_flags & STREAM_TOSERVER) ? txd->tx_type_eop_ts