diff --git a/src/app/valentina/core/vcmdexport.cpp b/src/app/valentina/core/vcmdexport.cpp
index c01dbeb0c..4946e7fa0 100644
--- a/src/app/valentina/core/vcmdexport.cpp
+++ b/src/app/valentina/core/vcmdexport.cpp
@@ -604,7 +604,7 @@ VAbstractLayoutDialog::PaperSizeTemplate VCommandLine::OptTiledPaperSize() const
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-PageOrientation VCommandLine::OptTiledPageOrientation()
+PageOrientation VCommandLine::OptTiledPageOrientation() const
 {
     return static_cast<PageOrientation>(not IsOptionSet(LONG_OPTION_TILED_PDF_LANDSCAPE));
 }
diff --git a/src/app/valentina/core/vcmdexport.h b/src/app/valentina/core/vcmdexport.h
index 89e447f93..c6aefe41e 100644
--- a/src/app/valentina/core/vcmdexport.h
+++ b/src/app/valentina/core/vcmdexport.h
@@ -134,7 +134,7 @@ public:
     
     QMarginsF TiledPageMargins() const;
     VAbstractLayoutDialog::PaperSizeTemplate OptTiledPaperSize() const;
-    PageOrientation OptTiledPageOrientation();
+    PageOrientation OptTiledPageOrientation() const;
 
 protected: