diff --git a/base_classes/NXentry.nxdl.xml b/base_classes/NXentry.nxdl.xml
index fcf2c3b0b0..849720a73e 100755
--- a/base_classes/NXentry.nxdl.xml
+++ b/base_classes/NXentry.nxdl.xml
@@ -99,12 +99,12 @@
 		<doc>Extended title for entry</doc>
 	</field>
 	<field name="experiment_identifier">
-        <doc>
-             Unique identifier for the experiment,
-             defined by the facility,
-             possibly linked to the proposals
-        </doc>
-    </field>
+		<doc>
+			Unique identifier for the experiment,
+			defined by the facility,
+			possibly linked to the proposals
+		</doc>
+	</field>
 	<field name="experiment_description">
 		<doc>Brief summary of the experiment, including key objectives.</doc>
 	</field>
@@ -112,8 +112,8 @@
 		<doc>Description of the full experiment (document in pdf, latex, ...)</doc>
 	</group>
 	<field name="collection_identifier">
-        <doc>User or Data Acquisition defined group of NeXus files or NXentry</doc>
-    </field>
+		<doc>User or Data Acquisition defined group of NeXus files or NXentry</doc>
+	</field>
 	<field name="collection_description">
 		<doc>Brief summary of the collection, including grouping criteria.</doc>
 	</field>
@@ -257,4 +257,4 @@
 	<group type="NXparameters" />
 	<group type="NXprocess" />
 	<group type="NXsubentry" />
-</definition>
\ No newline at end of file
+</definition>