1 files changed, 6 insertions, 6 deletions
diff --git a/sc/source/ui/inc/tpsort.hxx b/sc/source/ui/inc/tpsort.hxx
index 95a7629f7d09..1e4c2b15788e 100644
--- a/sc/source/ui/inc/tpsort.hxx
+++ b/sc/source/ui/inc/tpsort.hxx
@@ -63,9 +63,9 @@ protected:
 private:
     Idle m_aIdle;
 
-    OUString            aStrUndefined;
-    OUString            aStrColumn;
-    OUString            aStrRow;
+    OUString const            aStrUndefined;
+    OUString const            aStrColumn;
+    OUString const            aStrRow;
 
     const sal_uInt16    nWhichSort;
     ScViewData*         pViewData;
@@ -116,9 +116,9 @@ protected:
     virtual DeactivateRC   DeactivatePage  ( SfxItemSet* pSet ) override;
 
 private:
-    OUString            aStrRowLabel;
-    OUString            aStrColLabel;
-    OUString            aStrUndefined;
+    OUString const            aStrRowLabel;
+    OUString const            aStrColLabel;
+    OUString const            aStrUndefined;
 
     const sal_uInt16    nWhichSort;
     ScSortParam         aSortData;