diff --git a/src/systemc/ext/tlm_core/2/generic_payload/phase.hh b/src/systemc/ext/tlm_core/2/generic_payload/phase.hh
index db5866a6b8..df61ffa68a 100644
--- a/src/systemc/ext/tlm_core/2/generic_payload/phase.hh
+++ b/src/systemc/ext/tlm_core/2/generic_payload/phase.hh
@@ -106,12 +106,4 @@ static class SC_CONCAT_HELPER_(tlm_phase_, name_arg) : \
 
 } // namespace tlm
 
-#undef SC_CONCAT_HELPER_
-#undef SC_CONCAT_HELPER_DEFERRED_
-#undef SC_CONCAT_HELPER_MORE_DEFERRED_
-
-#undef SC_STRINGIFY_HELPER_
-#undef SC_STRINGIFY_HELPER_DEFERRED_
-#undef SC_STRINGIFY_HELPER_MORE_DEFERRED_
-
 #endif /* __SYSTEMC_EXT_TLM_CORE_2_GENERIC_PAYLOAD_PHASE_HH__ */