diff --git a/wiki/hierarchical_data_format.md b/wiki/hierarchical_data_format.md
index b55e3c4..59c59be 100644
--- a/wiki/hierarchical_data_format.md
+++ b/wiki/hierarchical_data_format.md
@@ -9,6 +9,6 @@ There are various possible viewers for `.hdf` files.
 The following list contains some of them.
 
 - [HDFView](https://github.com/HDFGroup/hdfview) is a graphical viewer for `.hdf` files.
-    It also features the ability to plot data.
+  It also features the ability to plot data.
 - [ViTables](https://github.com/uvemas/ViTables) is a graphical viewer for `.hdf` files.
-    Contrary to other viewers it does not feature plotting data and is relatively simple.
+  Contrary to other viewers it does not feature plotting data and is relatively simple.