diff --git a/stmhal/mpconfigport.h b/stmhal/mpconfigport.h
index 567e131d55..96a330d139 100644
--- a/stmhal/mpconfigport.h
+++ b/stmhal/mpconfigport.h
@@ -109,7 +109,9 @@
 #define MICROPY_PY_SYS_PLATFORM     "pyboard"
 #endif
 #define MICROPY_PY_UERRNO           (1)
+#ifndef MICROPY_PY_THREAD
 #define MICROPY_PY_THREAD           (0)
+#endif
 
 // extended modules
 #define MICROPY_PY_UCTYPES          (1)