diff --git a/mdx/uk/opensc-mac.cfg b/mdx/uk/opensc-mac.cfg
new file mode 100644
index 00000000..afad28fc
--- /dev/null
+++ b/mdx/uk/opensc-mac.cfg
@@ -0,0 +1,3 @@
+# PKCS#11 provider configuration for for OpenSC running under Mac OS X
+name = OpenSC
+library = /Library/OpenSC/lib/pkcs11/opensc-pkcs11.so