diff --git a/mocks/micropython.py b/mocks/micropython.py
index 51f7c480c..436f58cb2 100644
--- a/mocks/micropython.py
+++ b/mocks/micropython.py
@@ -1,3 +1,6 @@
+def const(c):
+    pass
+
 def mem_info(verbose=None):
     pass