diff --git a/sim/fakes/gc.py b/sim/fakes/gc.py
index 965169876cba59627d4e54efac1d2cdeb9cde2c8..577e9433572d32870fa779686eace18d7ca0f044 100644
--- a/sim/fakes/gc.py
+++ b/sim/fakes/gc.py
@@ -1,2 +1,18 @@
 def mem_free():
     return 1337
+
+
+def isenabled():
+    return True
+
+
+def enable():
+    pass
+
+
+def disable():
+    pass
+
+
+def collect():
+    pass