1 files changed, 1 insertions, 1 deletions
diff --git a/py/mpstate.h b/py/mpstate.h
index 51f290b55b..138c561730 100644
--- a/py/mpstate.h
+++ b/py/mpstate.h
@@ -145,7 +145,7 @@ typedef struct _mp_state_mem_t {
 
     #if MICROPY_PY_THREAD && !MICROPY_PY_THREAD_GIL
     // This is a global mutex used to make the GC thread-safe.
-    mp_thread_mutex_t gc_mutex;
+    mp_thread_recursive_mutex_t gc_mutex;
     #endif
 } mp_state_mem_t;