diff --git a/preprod.properties b/preprod.properties
index 8fe91d3e..e5e5048c 100644
--- a/preprod.properties
+++ b/preprod.properties
@@ -3,3 +3,8 @@
 #
 # Properties defined for the env=preprod deployment environment.
 #
+
+#
+# Location of the PKCS#11 configuration file for the Thales HSM.
+#
+keystore.pkcs11.config = /opt/xmlsectool/nshield.cfg
diff --git a/prod.properties b/prod.properties
index aacf0d6b..ec8bc5a6 100644
--- a/prod.properties
+++ b/prod.properties
@@ -3,3 +3,8 @@
 #
 # Properties defined for the env=prod deployment environment.
 #
+
+#
+# Location of the PKCS#11 configuration file for the Thales HSM.
+#
+keystore.pkcs11.config = /opt/xmlsectool/nshield.cfg