diff --git a/sc/inc/fielduno.hxx b/sc/inc/fielduno.hxx
index e176ac862de9..8664e2b673a8 100644
--- a/sc/inc/fielduno.hxx
+++ b/sc/inc/fielduno.hxx
@@ -61,7 +61,7 @@ private:
     css::uno::Reference<css::text::XTextRange> mxContent;
     ScDocShell*             pDocShell;
     ScAddress               aCellPos;
-    ScEditSource* mpEditSource;
+    std::unique_ptr<ScEditSource> mpEditSource;
     /// List of refresh listeners.
     comphelper::OInterfaceContainerHelper2* mpRefreshListeners;
     /// mutex to lock the InterfaceContainerHelper
diff --git a/sc/source/ui/unoobj/fielduno.cxx b/sc/source/ui/unoobj/fielduno.cxx
index 4b33ea74f000..0316b832cc75 100644
--- a/sc/source/ui/unoobj/fielduno.cxx
+++ b/sc/source/ui/unoobj/fielduno.cxx
@@ -278,7 +278,7 @@ ScCellFieldsObj::ScCellFieldsObj(
 {
     pDocShell->GetDocument().AddUnoObject(*this);
 
-    mpEditSource = new ScCellEditSource( pDocShell, aCellPos );
+    mpEditSource.reset( new ScCellEditSource( pDocShell, aCellPos ) );
 }
 
 ScCellFieldsObj::~ScCellFieldsObj()
@@ -288,7 +288,7 @@ ScCellFieldsObj::~ScCellFieldsObj()
     if (pDocShell)
         pDocShell->GetDocument().RemoveUnoObject(*this);
 
-    delete mpEditSource;
+    mpEditSource.reset();
 
     // increment refcount to prevent double call off dtor
     osl_atomic_increment( &m_refCount );