diff --git a/drivers/staging/unisys/visorbus/vmcallinterface.h b/drivers/staging/unisys/visorbus/vmcallinterface.h
index de6693f83c6b..541911bcb6f0 100644
--- a/drivers/staging/unisys/visorbus/vmcallinterface.h
+++ b/drivers/staging/unisys/visorbus/vmcallinterface.h
@@ -17,8 +17,7 @@
 #define __VMCALLINTERFACE_H__
 
 /*
- * enum vmcall_monitor_interface_method_tuple - VMCALL identification tuples.
- * @VMCALL_CONTROLVM_ADDR: Used by all guests, not just IO.
+ * VMCALL_CONTROLVM_ADDR: Used by all guests, not just IO.
  *
  * Note: When a new VMCALL is added:
  * - The 1st 2 hex digits correspond to one of the VMCALL_MONITOR_INTERFACE
@@ -29,9 +28,7 @@
  * - The 0x01 identifies it as the 1st instance of a VMCALL_VIRTPART type of
  *   VMCALL.
  */
-enum vmcall_monitor_interface_method_tuple {
-	VMCALL_CONTROLVM_ADDR = 0x0501,
-};
+#define VMCALL_CONTROLVM_ADDR 0x0501
 
 enum vmcall_result {
 	VMCALL_RESULT_SUCCESS = 0,