diff --git a/cards_corrections.json b/cards_corrections
similarity index 100%
rename from cards_corrections.json
rename to cards_corrections
diff --git a/cards_delete.json b/cards_delete
similarity index 100%
rename from cards_delete.json
rename to cards_delete
diff --git a/cards_manual.json b/cards_manual
similarity index 100%
rename from cards_manual.json
rename to cards_manual
diff --git a/main.py b/main.py
index 74190c44..4f4d0295 100644
--- a/main.py
+++ b/main.py
@@ -13,17 +13,17 @@ presets = {
     }
 }
 
-with open('set_info.json') as data_file:
+with open('set_info') as data_file:
     setinfos = commentjson.load(data_file)
 
-with open('cards_manual.json') as data_file:
+with open('cards_manual') as data_file:
     manual_sets = commentjson.load(data_file)
     #manual_cards = manual_cards['cards']
 
-with open('cards_corrections.json') as data_file:
+with open('cards_corrections') as data_file:
     card_corrections = commentjson.load(data_file)
 
-with open('cards_delete.json') as data_file:
+with open('cards_delete') as data_file:
     delete_cards = commentjson.load(data_file)
 
 errorlog = []
diff --git a/set_info.json b/set_info
similarity index 100%
rename from set_info.json
rename to set_info