diff --git a/compilerplugins/clang/mergeclasses.results b/compilerplugins/clang/mergeclasses.results
index 428bd40f2baa..75c033bb3785 100644
--- a/compilerplugins/clang/mergeclasses.results
+++ b/compilerplugins/clang/mergeclasses.results
@@ -92,7 +92,6 @@ merge SalPrinter with PspSalPrinter
 merge SalSession with (anonymous namespace)::IceSalSession
 merge SalSystem with SalGenericSystem
 merge ScBiffReader with ScQProReader
-merge ScCbWarningBox with ScReplaceWarnBox
 merge ScDBFunc with ScTabViewShell
 merge ScDPCache::DBConnector with (anonymous namespace)::DBConnector
 merge ScDocFunc with ScDocFuncDirect
diff --git a/sc/source/ui/inc/warnbox.hxx b/sc/source/ui/inc/warnbox.hxx
index d8a49cf021c8..c211a466665c 100644
--- a/sc/source/ui/inc/warnbox.hxx
+++ b/sc/source/ui/inc/warnbox.hxx
@@ -22,34 +22,17 @@
 
 #include <vcl/msgbox.hxx>
 
-/** Message box with warning image and "Do not show again" checkbox. */
-class ScCbWarningBox : public WarningBox
+/** Warning box for "Replace cell contents?".
+    With warning image and "Do not show again" checkbox. */
+class ScReplaceWarnBox : public WarningBox
 {
 public:
-    /** @param rMsgStr  Resource ID for the message text. */
-                                ScCbWarningBox( vcl::Window* pParent, const OUString& rMsgStr );
+                                ScReplaceWarnBox( vcl::Window* pParent );
 
     /** Opens dialog if IsDialogEnabled() returns true.
         @descr  If after executing the dialog the checkbox "Do not show again" is set,
                 the method DisableDialog() will be called. */
     virtual sal_Int16           Execute() override;
-
-    /** Called before executing the dialog. If this method returns false, the dialog will not be opened. */
-    virtual bool                IsDialogEnabled();
-    /** Called, when dialog is exited and the option "Do not show again" is set. */
-    virtual void                DisableDialog();
-};
-
-/** Warning box for "Replace cell contents?". */
-class ScReplaceWarnBox : public ScCbWarningBox
-{
-public:
-                                ScReplaceWarnBox( vcl::Window* pParent );
-
-    /** Reads the configuration key "ReplaceCellsWarning". */
-    virtual bool                IsDialogEnabled() override;
-    /** Sets the configuration key "ReplaceCellsWarning" to false. */
-    virtual void                DisableDialog() override;
 };
 
 #endif
diff --git a/sc/source/ui/miscdlgs/warnbox.cxx b/sc/source/ui/miscdlgs/warnbox.cxx
index 8d500490f13c..da64e32dbd68 100644
--- a/sc/source/ui/miscdlgs/warnbox.cxx
+++ b/sc/source/ui/miscdlgs/warnbox.cxx
@@ -24,53 +24,31 @@
 #include "scresid.hxx"
 #include "sc.hrc"
 
-ScCbWarningBox::ScCbWarningBox( vcl::Window* pParent, const OUString& rMsgStr ) :
-    WarningBox( pParent, WB_YES_NO | WB_DEF_YES, rMsgStr )
+ScReplaceWarnBox::ScReplaceWarnBox( vcl::Window* pParent ) :
+    WarningBox( pParent, WB_YES_NO | WB_DEF_YES, OUString( ScResId( STR_REPLCELLSWARN ) ) )
 {
     // By default, the check box is ON, and the user needs to un-check it to
     // disable all future warnings.
     SetCheckBoxState(true);
     SetCheckBoxText(ScResId(SCSTR_WARN_ME_IN_FUTURE_CHECK));
+    SetHelpId( HID_SC_REPLCELLSWARN );
 }
 
-sal_Int16 ScCbWarningBox::Execute()
+sal_Int16 ScReplaceWarnBox::Execute()
 {
-    sal_Int16 nRet = (GetStyle() & WB_DEF_YES) ? RET_YES : RET_NO;
-    if( IsDialogEnabled() )
+    sal_Int16 nRet = RET_YES;
+    if( (bool) SC_MOD()->GetInputOptions().GetReplaceCellsWarn() )
     {
         nRet = WarningBox::Execute();
         if (!GetCheckBoxState())
-            DisableDialog();
+        {
+            ScModule* pScMod = SC_MOD();
+            ScInputOptions aInputOpt( pScMod->GetInputOptions() );
+            aInputOpt.SetReplaceCellsWarn( false );
+            pScMod->SetInputOptions( aInputOpt );
+        }
     }
     return nRet;
 }
 
-bool ScCbWarningBox::IsDialogEnabled()
-{
-    return true;
-}
-
-void ScCbWarningBox::DisableDialog()
-{
-}
-
-ScReplaceWarnBox::ScReplaceWarnBox( vcl::Window* pParent ) :
-    ScCbWarningBox( pParent, OUString( ScResId( STR_REPLCELLSWARN ) ) )
-{
-    SetHelpId( HID_SC_REPLCELLSWARN );
-}
-
-bool ScReplaceWarnBox::IsDialogEnabled()
-{
-    return (bool) SC_MOD()->GetInputOptions().GetReplaceCellsWarn();
-}
-
-void ScReplaceWarnBox::DisableDialog()
-{
-    ScModule* pScMod = SC_MOD();
-    ScInputOptions aInputOpt( pScMod->GetInputOptions() );
-    aInputOpt.SetReplaceCellsWarn( false );
-    pScMod->SetInputOptions( aInputOpt );
-}
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */