diff --git a/include/pcmcia/ss.h b/include/pcmcia/ss.h
index 35e469dea6ec565ae5b1db8f6d03de4ec2132294..5e0a01ab22163e96d010552a749023cc9e825fda 100644
--- a/include/pcmcia/ss.h
+++ b/include/pcmcia/ss.h
@@ -147,6 +147,9 @@ extern struct pccard_resource_ops pccard_static_ops;
 /* !SS_CAP_STATIC_MAP */
 extern struct pccard_resource_ops pccard_nonstatic_ops;
 
+/* static mem, dynamic IO sockets */
+extern struct pccard_resource_ops pccard_iodyn_ops;
+
 /*
  *  Calls to set up low-level "Socket Services" drivers
  */