diff --git a/include/msi.h b/include/msi.h
index 642de00c43a..2dbe4d3420a 100644
--- a/include/msi.h
+++ b/include/msi.h
@@ -46,6 +46,17 @@ typedef enum tagINSTALLSTATE
     INSTALLSTATE_DEFAULT = 5
 } INSTALLSTATE;
 
+typedef enum tagMSIPATCHSTATE
+{
+    MSIPATCHSTATE_INVALID = 0,
+    MSIPATCHSTATE_APPLIED = 1,
+    MSIPATCHSTATE_SUPERSEDED = 2,
+    MSIPATCHSTATE_OBSOLETED = 4,
+    MSIPATCHSTATE_REGISTERED = 8,
+    MSIPATCHSTATE_ALL = (MSIPATCHSTATE_APPLIED | MSIPATCHSTATE_SUPERSEDED |
+                         MSIPATCHSTATE_OBSOLETED | MSIPATCHSTATE_REGISTERED)
+} MSIPATCHSTATE;
+
 typedef enum tagINSTALLUILEVEL
 {
     INSTALLUILEVEL_NOCHANGE = 0,