diff --git a/src/rose/rose_build_bytecode.cpp b/src/rose/rose_build_bytecode.cpp
index 5b3806a2..c6f709bc 100644
--- a/src/rose/rose_build_bytecode.cpp
+++ b/src/rose/rose_build_bytecode.cpp
@@ -5191,8 +5191,6 @@ aligned_unique_ptr<RoseEngine> RoseBuildImpl::buildFinalEngine(u32 minWidth) {
     engine->eagerIterOffset = eagerIterOffset;
     engine->handledKeyCount = bc.handledKeys.size();
 
-    engine->group_weak_end = group_weak_end;
-
     engine->rolesWithStateCount = bc.numStates;
 
     engine->leftOffset = leftOffset;
diff --git a/src/rose/rose_build_impl.h b/src/rose/rose_build_impl.h
index ca1b64e2..a00bc4ea 100644
--- a/src/rose/rose_build_impl.h
+++ b/src/rose/rose_build_impl.h
@@ -547,7 +547,6 @@ public:
     std::map<size_t, std::vector<std::unique_ptr<raw_dfa>>> anchored_nfas;
     std::map<simple_anchored_info, std::set<u32>> anchored_simple;
     std::map<u32, std::set<u32> > group_to_literal;
-    u32 group_weak_end;
     u32 group_end;
 
     u32 anchored_base_id;
diff --git a/src/rose/rose_build_misc.cpp b/src/rose/rose_build_misc.cpp
index 7fbc5f65..f99c391f 100644
--- a/src/rose/rose_build_misc.cpp
+++ b/src/rose/rose_build_misc.cpp
@@ -76,7 +76,6 @@ RoseBuildImpl::RoseBuildImpl(ReportManager &rm_in, SomSlotManager &ssm_in,
       vertexIndex(0),
       delay_base_id(MO_INVALID_IDX),
       hasSom(false),
-      group_weak_end(0),
       group_end(0),
       anchored_base_id(MO_INVALID_IDX),
       ematcher_region_size(0),
diff --git a/src/rose/rose_dump.cpp b/src/rose/rose_dump.cpp
index 19d8414d..f53ebe61 100644
--- a/src/rose/rose_dump.cpp
+++ b/src/rose/rose_dump.cpp
@@ -1076,7 +1076,6 @@ void roseDumpStructRaw(const RoseEngine *t, FILE *f) {
     DUMP_U32(t, ematcherRegionSize);
     DUMP_U32(t, somRevCount);
     DUMP_U32(t, somRevOffsetOffset);
-    DUMP_U32(t, group_weak_end);
     DUMP_U32(t, floatingStreamState);
     fprintf(f, "}\n");
     fprintf(f, "sizeof(RoseEngine) = %zu\n", sizeof(RoseEngine));
diff --git a/src/rose/rose_internal.h b/src/rose/rose_internal.h
index 803810b0..2b646af0 100644
--- a/src/rose/rose_internal.h
+++ b/src/rose/rose_internal.h
@@ -429,7 +429,6 @@ struct RoseEngine {
     u32 ematcherRegionSize; /* max region size to pass to ematcher */
     u32 somRevCount; /**< number of som reverse nfas */
     u32 somRevOffsetOffset; /**< offset to array of offsets to som rev nfas */
-    u32 group_weak_end; /* end of weak groups, debugging only */
     u32 floatingStreamState; // size in bytes
 
     struct scatter_full_plan state_init;