diff --git a/README.md b/README.md
index 5dc1ba9..cac66f4 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ python json_translate /home/user/project/locales/en_US.json --locale ES --output
 
 ```
 -l, --locale          Target language to translate the file. Defaults to "en" (English)
--sl, --source-locale  Source language translating from (Required for glossaries). Defaults to "en" (English)
+-sl, --source-locale  Source language translating from (Optional, required for glossaries)
 -g, --glossary        Glossary ID to use when translating (Optional)
 -o, --output          Output file name. Defaults to "<target locale>.json" (ex: en.json)
 -s, --sleep           Sleep time between API calls. Defaults to 0.01 (seconds)
diff --git a/json_translate/parser.py b/json_translate/parser.py
index 905596a..6b1ea50 100644
--- a/json_translate/parser.py
+++ b/json_translate/parser.py
@@ -37,7 +37,6 @@ def get_parser(prog_name):
     parser.add_argument(
         "-sl",
         "--source-locale",
-        default="en",
         help="Language translating from (required for glossary)",
     )
     parser.add_argument(