diff --git a/include/wmistr.h b/include/wmistr.h
index 5a806b69477..0962fc3f92b 100644
--- a/include/wmistr.h
+++ b/include/wmistr.h
@@ -19,6 +19,24 @@
 #ifndef _WMISTR_
 #define _WMISTR_
 
+#define WNODE_FLAG_ALL_DATA              0x00000001
+#define WNODE_FLAG_SINGLE_INSTANCE       0x00000002
+#define WNODE_FLAG_SINGLE_ITEM           0x00000004
+#define WNODE_FLAG_EVENT_ITEM            0x00000008
+#define WNODE_FLAG_FIXED_INSTANCE_SIZE   0x00000010
+#define WNODE_FLAG_TOO_SMALL             0x00000020
+#define WNODE_FLAG_INSTANCES_SAME        0x00000040
+#define WNODE_FLAG_STATIC_INSTANCE_NAMES 0x00000080
+#define WNODE_FLAG_USE_TIMESTAMP         0x00000200
+#define WNODE_FLAG_EVENT_REFERENCE       0x00002000
+#define WNODE_FLAG_METHOD_ITEM           0x00008000
+#define WNODE_FLAG_PDO_INSTANCE_NAMES    0x00010000
+#define WNODE_FLAG_TRACED_GUID           0x00020000
+#define WNODE_FLAG_LOG_WNODE             0x00040000
+#define WNODE_FLAG_USE_GUID_PTR          0x00080000
+#define WNODE_FLAG_USE_MOF_PTR           0x00100000
+#define WNODE_FLAG_SEVERITY_MASK         0xFF000000
+
 typedef enum
 {
     WMI_GET_ALL_DATA = 0,