diff --git a/base_classes/NXdetector.nxdl.xml b/base_classes/NXdetector.nxdl.xml
index 9e670ffc8a..36e8afeee2 100644
--- a/base_classes/NXdetector.nxdl.xml
+++ b/base_classes/NXdetector.nxdl.xml
@@ -21,14 +21,15 @@
 #
 # For further information, see http://www.nexusformat.org
 -->
-<definition category="base" extends="NXobject" name="NXdetector"
-            type="group"
-            xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"
-            xmlns="http://definition.nexusformat.org/nxdl/3.1"
-            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-            xmlns:xs="http://www.w3.org/2001/XMLSchema"
-            xmlns:ns="http://definition.nexusformat.org/nxdl/@NXDL_RELEASE@"
-            >
+<definition
+  name="NXdetector"
+  type="group"
+  extends="NXobject"
+  category="base"
+  xmlns="http://definition.nexusformat.org/nxdl/3.1"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"
+  >
 
   <symbols>
     <doc>
diff --git a/base_classes/NXdetector_channel.nxdl.xml b/base_classes/NXdetector_channel.nxdl.xml
index 2ca7c684cf..fa1f11c84c 100644
--- a/base_classes/NXdetector_channel.nxdl.xml
+++ b/base_classes/NXdetector_channel.nxdl.xml
@@ -21,14 +21,15 @@
 #
 # For further information, see http://www.nexusformat.org
 -->
-<definition category="base" extends="NXobject" name="NXdetector_channel"
-            type="group"
-            xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"
-            xmlns="http://definition.nexusformat.org/nxdl/3.1"
-            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-            xmlns:xs="http://www.w3.org/2001/XMLSchema"
-            xmlns:ns="http://definition.nexusformat.org/nxdl/@NXDL_RELEASE@"
-            >
+<definition
+  name="NXdetector_channel"
+  type="group"
+  extends="NXobject" 
+  category="base"
+  xmlns="http://definition.nexusformat.org/nxdl/3.1"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"
+  >
 
   <symbols>
     <doc>