diff --git a/migration/__init__.py b/migration/__init__.py
index 4e4e6f36..24714396 100644
--- a/migration/__init__.py
+++ b/migration/__init__.py
@@ -336,7 +336,7 @@ async def main():
         init_tables()
         if len(sys.argv) == 2:
             await handle_auto()
-        elif "comments" in sys.srgv:
+        elif "comments" in sys.argv:
             await handle_comments()
     else:
         print("[migration] usage: python server.py migrate")
diff --git a/migration/bson2json.py b/migration/bson2json.py
index 77538d4d..cca0a386 100644
--- a/migration/bson2json.py
+++ b/migration/bson2json.py
@@ -2,7 +2,7 @@ import json
 import os
 
 import bson
-
+import gc
 from .utils import DateTimeEncoder
 
 
@@ -17,6 +17,7 @@ def json_tables():
         "comments": [],
     }
     for table in data.keys():
+        gc.collect()
         lc = []
         with open("dump/discours/" + table + ".bson", "rb") as f:
             bs = f.read()