diff --git a/py/mpconfig.h b/py/mpconfig.h
index 62c123bc0b..765a8f45ce 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -1313,7 +1313,7 @@ typedef double mp_float_t;
 
 // Whether to provide "micropython" module
 #ifndef MICROPY_PY_MICROPYTHON
-#define MICROPY_PY_MICROPYTHON (1)
+#define MICROPY_PY_MICROPYTHON (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
 #endif
 
 // Whether to provide "gc" module
diff --git a/tests/basics/nanbox_smallint.py b/tests/basics/nanbox_smallint.py
index 167b196010..b3a502e447 100644
--- a/tests/basics/nanbox_smallint.py
+++ b/tests/basics/nanbox_smallint.py
@@ -1,6 +1,10 @@
 # Test creating small integers without heap allocation in nan-boxing mode.
 
-import micropython
+try:
+    import micropython
+except ImportError:
+    print("SKIP")
+    raise SystemExit
 
 try:
     # Test for nan-box build by allocating a float while heap is locked.