4 files changed, 4 insertions, 4 deletions
diff --git a/sc/source/filter/inc/workbookhelper.hxx b/sc/source/filter/inc/workbookhelper.hxx
index 6f2eabfdab3f..afd36fadd83b 100644
--- a/sc/source/filter/inc/workbookhelper.hxx
+++ b/sc/source/filter/inc/workbookhelper.hxx
@@ -134,7 +134,7 @@ public:
 
     ScEditEngineDefaulter& getEditEngine() const;
     /** Returns a reference to the source/target spreadsheet document model. */
-    css::uno::Reference< css::sheet::XSpreadsheetDocument >
+    const css::uno::Reference< css::sheet::XSpreadsheetDocument >&
                         getDocument() const;
 
     /** Returns a reference to the specified spreadsheet in the document model. */
diff --git a/sc/source/filter/inc/worksheethelper.hxx b/sc/source/filter/inc/worksheethelper.hxx
index 3929b180de57..bd859ea67051 100644
--- a/sc/source/filter/inc/worksheethelper.hxx
+++ b/sc/source/filter/inc/worksheethelper.hxx
@@ -204,7 +204,7 @@ public:
     /** Returns the absolute cell position in 1/100 mm. */
     css::awt::Point getCellPosition( sal_Int32 nCol, sal_Int32 nRow ) const;
     /** Returns the size of the entire drawing page in 1/100 mm. */
-    css::awt::Size getDrawPageSize() const;
+    const css::awt::Size& getDrawPageSize() const;
 
     /** Returns the buffer for cell contents and cell formatting. */
     SheetDataBuffer&    getSheetData() const;
diff --git a/sc/source/filter/inc/xicontent.hxx b/sc/source/filter/inc/xicontent.hxx
index 77a1068035ad..cb6b80850cdb 100644
--- a/sc/source/filter/inc/xicontent.hxx
+++ b/sc/source/filter/inc/xicontent.hxx
@@ -268,7 +268,7 @@ public:
 
     /** Reads the FILEPASS record, queries a password and sets decryption algorithm.
         @return  Error code that may cause an error message after import. */
-    static ErrCode      ReadFilepass( XclImpStream& rStrm );
+    static const ErrCode&      ReadFilepass( XclImpStream& rStrm );
 };
 
 // Document protection ========================================================
diff --git a/sc/source/filter/inc/xistream.hxx b/sc/source/filter/inc/xistream.hxx
index 9f20f3984b32..47e78e7ad4cb 100644
--- a/sc/source/filter/inc/xistream.hxx
+++ b/sc/source/filter/inc/xistream.hxx
@@ -47,7 +47,7 @@ public:
     virtual             ~XclImpDecrypter() override;
 
     /** Returns the current error code of the decrypter. */
-    ErrCode      GetError() const { return mnError; }
+    const ErrCode&      GetError() const { return mnError; }
     /** Returns true, if the decoder has been initialized correctly. */
     bool         IsValid() const { return mnError == ERRCODE_NONE; }