diff --git a/kibot/mcpyrate/activate.py b/kibot/mcpyrate/activate.py
index f1893b81..1ffe2612 100644
--- a/kibot/mcpyrate/activate.py
+++ b/kibot/mcpyrate/activate.py
@@ -26,10 +26,23 @@ the `PYTHONDONTWRITEBYTECODE` environment variable, and the attribute
 '''
 
 from importlib.machinery import SourceFileLoader, FileFinder
-
 from .importer import source_to_xcode, path_xstats, invalidate_xcaches
 
-SourceFileLoader.source_to_code = source_to_xcode
-# we could replace SourceFileLoader.set_data with a no-op to force-disable pyc caching.
-SourceFileLoader.path_stats = path_xstats
-FileFinder.invalidate_caches = invalidate_xcaches
+
+def activate():
+    SourceFileLoader.source_to_code = source_to_xcode
+    # we could replace SourceFileLoader.set_data with a no-op to force-disable pyc caching.
+    SourceFileLoader.path_stats = path_xstats
+    FileFinder.invalidate_caches = invalidate_xcaches
+
+
+def de_activate():
+    SourceFileLoader.source_to_code = old_source_to_code
+    SourceFileLoader.path_stats = old_path_stats
+    FileFinder.invalidate_caches = old_invalidate_caches
+
+
+old_source_to_code = SourceFileLoader.source_to_code
+old_path_stats = SourceFileLoader.path_stats
+old_invalidate_caches = FileFinder.invalidate_caches
+activate()