diff --git a/freqtrade/misc.py b/freqtrade/misc.py
index fac379c18..7546dba8f 100644
--- a/freqtrade/misc.py
+++ b/freqtrade/misc.py
@@ -71,14 +71,14 @@ def file_dump_json(filename, data, is_zip=False) -> None:
     :param data: JSON Data to save
     :return:
     """
-    if not is_zip:
-        with open(filename, 'w') as fp:
-            json.dump(data, fp, default=str)
-    else:
+    if is_zip:
         if not filename.endswith('.gz'):
             filename = filename + '.gz'
         with gzip.open(filename, 'w') as fp:
             json.dump(data, fp, default=str)
+    else:
+        with open(filename, 'w') as fp:
+            json.dump(data, fp, default=str)
 
 
 def format_ms_time(date: str) -> str: