diff --git a/docs/datadictionary/index.rst b/docs/datadictionary/index.rst
index 3ac8587..4039cca 100644
--- a/docs/datadictionary/index.rst
+++ b/docs/datadictionary/index.rst
@@ -40,7 +40,7 @@
 .. toctree::
    :maxdepth: 1
    
-	resourcedefinitioncodesnip 
+   resourcedefinitioncodesnip 
 
 
 Resource source: