diff --git a/reactos/include/reactos/win32k/ntuser.h b/reactos/include/reactos/win32k/ntuser.h
index 2f6cbdcba01..3e2f5699cb3 100644
--- a/reactos/include/reactos/win32k/ntuser.h
+++ b/reactos/include/reactos/win32k/ntuser.h
@@ -36,7 +36,6 @@ typedef struct _WINDOWCLASS
         WNDPROC WndProcExtra;
         PCALLPROC CallProc;
     };
-    PCALLPROC CallProc2;
     PCALLPROC CallProcList;
     INT ClsExtra;
     INT WndExtra;
diff --git a/reactos/subsystems/win32/win32k/ntuser/class.c b/reactos/subsystems/win32/win32k/ntuser/class.c
index 771914640f8..799ae6d2807 100644
--- a/reactos/subsystems/win32/win32k/ntuser/class.c
+++ b/reactos/subsystems/win32/win32k/ntuser/class.c
@@ -545,7 +545,6 @@ IntMakeCloneBaseClass(IN OUT PWINDOWCLASS Class,
 
         if (!Class->System)
             Clone->CallProc = Class->CallProc;
-        Clone->CallProc2 = Class->CallProc2;
 
         Clone = Clone->Next;
     }