diff --git a/ApplicationLibCode/UserInterface/RiuMultiPlotBook.cpp b/ApplicationLibCode/UserInterface/RiuMultiPlotBook.cpp
index 6df1004a5f..c250565ab2 100644
--- a/ApplicationLibCode/UserInterface/RiuMultiPlotBook.cpp
+++ b/ApplicationLibCode/UserInterface/RiuMultiPlotBook.cpp
@@ -86,7 +86,7 @@ protected:
         for ( auto page : pages )
         {
             fullSize.setWidth( std::max( fullSize.width(), page->minimumSizeHint().width() ) );
-            fullSize.setHeight( fullSize.height() + 8 + page->minimumSizeHint().height() );
+            fullSize.setHeight( fullSize.height() + m_margins + page->minimumSizeHint().height() );
         }
         return fullSize;
     }