diff --git a/windows/mpconfigport.h b/windows/mpconfigport.h
index 5812976006..80166f1495 100644
--- a/windows/mpconfigport.h
+++ b/windows/mpconfigport.h
@@ -89,6 +89,7 @@
 #define MICROPY_PY_UHEAPQ           (1)
 #define MICROPY_PY_UHASHLIB         (1)
 #define MICROPY_PY_UBINASCII        (1)
+#define MICROPY_PY_URANDOM          (1)
 #define MICROPY_PY_MACHINE          (1)
 
 #define MICROPY_ERROR_REPORTING     (MICROPY_ERROR_REPORTING_DETAILED)