diff --git a/docs/source/manual/file_formats/reference_file.rst b/docs/source/manual/file_formats/reference_file.rst
index 0f90a8a9f..6f5b5474a 100644
--- a/docs/source/manual/file_formats/reference_file.rst
+++ b/docs/source/manual/file_formats/reference_file.rst
@@ -14,7 +14,7 @@ An example of the file is shown as follows.
 
 .. code-block:: yaml
 
-Date: Mon Sep  9 16:41:53 2024
+  Date: Mon Sep  9 16:41:53 2024
 
 #the instance names are given during netlist generation