diff --git a/deepl_api.py b/deepl_api.py
index d0ddccdb9b4a6b198c31eeb74059f0220de05d71..df1248fa8fa188340841377dcba5036ffa2c03d3 100644
--- a/deepl_api.py
+++ b/deepl_api.py
@@ -7,7 +7,7 @@ def read_file(path):
     return data
 
 def get_translation(text, target_lang):
-    args = {"auth_key": auth_key, "text": text, "target_lang": target_lang}
+    args = {"auth_key": auth_key, "text": text, "target_lang": target_lang, "source_lang": "DE"}
     r = requests.get("https://api.deepl.com/v2/translate", params = args)
     return r.text