diff --git a/src/llmtuner/data/template.py b/src/llmtuner/data/template.py
index 47c25863..4b2e2e51 100644
--- a/src/llmtuner/data/template.py
+++ b/src/llmtuner/data/template.py
@@ -420,6 +420,7 @@ _register_template(
 _register_template(
     name="default",
     format_user=StringFormatter(slots=["Human: {{content}}\nAssistant: "]),
+    format_system=StringFormatter(slots=["{{content}}\n"]),
     format_separator=EmptyFormatter(slots=["\n"]),
 )