1 files changed, 3 insertions, 0 deletions
diff --git a/py/mpstate.h b/py/mpstate.h
index f29e6be50..499d86351 100644
--- a/py/mpstate.h
+++ b/py/mpstate.h
@@ -41,6 +41,9 @@
 // variable, but in the future it is hoped that the state can become local.
 
 enum {
+    #if MICROPY_PY_SYS_TRACEBACKLIMIT
+    MP_SYS_MUTABLE_TRACEBACKLIMIT,
+    #endif
     MP_SYS_MUTABLE_NUM,
 };