diff --git a/spaceapi/active.py b/spaceapi/active.py
--- a/spaceapi/active.py
+++ b/spaceapi/active.py
@@ -23,7 +23,7 @@ def reload_json():
     with open(default_json_file, encoding='utf-8') as f:
         default_json = json.load(f)
 
-    if os.path.exists(last_state_file):
+    if os.path.exists(last_state_file) and os.path.isfile(last_state_file):
         with open(last_state_file, encoding='utf-8') as f:
             active_json = json.load(f)