diff --git a/src/threadvars.h b/src/threadvars.h
index a632a23b4f..79a2b34dc4 100644
--- a/src/threadvars.h
+++ b/src/threadvars.h
@@ -71,6 +71,9 @@ typedef struct ThreadVars_ {
     /** no of times the thread has been restarted on failure */
     uint8_t restarted;
 
+    /** TmModule::flags for each module part of this thread */
+    uint8_t tmm_flags;
+
     /** local id */
     int id;
 
diff --git a/src/tm-threads.c b/src/tm-threads.c
index c6828b4071..b47d4b050d 100644
--- a/src/tm-threads.c
+++ b/src/tm-threads.c
@@ -730,6 +730,7 @@ static inline TmSlot * _TmSlotSetFuncAppend(ThreadVars *tv, TmModule *tm, void *
      * received a TM as arg, if it didn't exist */
     slot->tm_id = TmModuleGetIDForTM(tm);
 
+    tv->tmm_flags |= tm->flags;
     tv->cap_flags |= tm->cap_flags;
 
     if (tv->tm_slots == NULL) {