diff --git a/reactos/include/reactos/win32k/ntuser.h b/reactos/include/reactos/win32k/ntuser.h
index 6ad7858518c..2d513b5099a 100644
--- a/reactos/include/reactos/win32k/ntuser.h
+++ b/reactos/include/reactos/win32k/ntuser.h
@@ -638,6 +638,7 @@ NtUserCallNoParam(
 #define ONEPARAM_ROUTINE_ENABLEPROCWNDGHSTING 0x0d
 #define ONEPARAM_ROUTINE_GETDESKTOPMAPPING    0x0e
 #define ONEPARAM_ROUTINE_GETWINDOWINSTANCE    0x10
+#define ONEPARAM_ROUTINE_CREATECURICONHANDLE  0x25
 #define ONEPARAM_ROUTINE_MSQSETWAKEMASK       0x27
 #define ONEPARAM_ROUTINE_GETKEYBOARDTYPE      0x28
 #define ONEPARAM_ROUTINE_GETKEYBOARDLAYOUT    0x29
@@ -1222,7 +1223,7 @@ BOOL
 NTAPI
 NtUserGetIconSize(
     HANDLE Handle,
-    DWORD Unknown,
+    UINT istepIfAniCur,
     LONG  *plcx,
     LONG  *plcy);