diff --git a/sdk/include/reactos/idl/sam.idl b/sdk/include/reactos/idl/sam.idl
index 31cb7d3ce2e..ba43697a7ce 100644
--- a/sdk/include/reactos/idl/sam.idl
+++ b/sdk/include/reactos/idl/sam.idl
@@ -644,6 +644,10 @@ typedef struct _SAMPR_USER_INTERNAL1_INFORMATION
     BOOLEAN PasswordExpired;
 } SAMPR_USER_INTERNAL1_INFORMATION, *PSAMPR_USER_INTERNAL1_INFORMATION;
 
+/* SAMPR_USER_INTERNAL2_INFORMATION.Flags values */
+cpp_quote("#define USER_LOGON_BAD_PASSWORD    0x08000000")
+cpp_quote("#define USER_LOGON_SUCCESS         0x10000000")
+
 typedef struct _SAMPR_USER_INTERNAL2_INFORMATION
 {
     unsigned long Flags;