diff --git a/DDDetectors/compact/SiD.xml b/DDDetectors/compact/SiD.xml
index 3effefbea5d245c7dd9b2bffbc92200556213575..e0f7ab066813221602c350c049bfebdc5a3f96e8 100644
--- a/DDDetectors/compact/SiD.xml
+++ b/DDDetectors/compact/SiD.xml
@@ -1,6 +1,4 @@
-<lccdd xmlns:compact="http://www.lcsim.org/schemas/compact/1.0" 
-       xmlns:xs="http://www.w3.org/2001/XMLSchema" 
-       xs:noNamespaceSchemaLocation="http://www.lcsim.org/schemas/compact/1.0/compact.xsd">
+<lccdd>
 
   <info name="clic_sid_cdr"
         title="CLIC Silicon Detector CDR"
diff --git a/DDDetectors/compact/SiD_Markus.xml b/DDDetectors/compact/SiD_Markus.xml
index b7185809d18a8f3de364122140f42197c053125d..e4be0bfc59f9226216951456a0d239e551d3bc96 100644
--- a/DDDetectors/compact/SiD_Markus.xml
+++ b/DDDetectors/compact/SiD_Markus.xml
@@ -1,6 +1,4 @@
-<lccdd xmlns:compact="http://www.lcsim.org/schemas/compact/1.0" 
-       xmlns:xs="http://www.w3.org/2001/XMLSchema" 
-       xs:noNamespaceSchemaLocation="http://www.lcsim.org/schemas/compact/1.0/compact.xsd">
+<lccdd>
 
   <info name="clic_sid_cdr"
         title="CLIC Silicon Detector CDR"