diff --git a/mythtv/libs/libmythfreemheg/DynamicLineArt.cpp b/mythtv/libs/libmythfreemheg/DynamicLineArt.cpp
index b4b0c2433e3..60e597e3c32 100644
--- a/mythtv/libs/libmythfreemheg/DynamicLineArt.cpp
+++ b/mythtv/libs/libmythfreemheg/DynamicLineArt.cpp
@@ -113,14 +113,14 @@ void MHDynamicLineArt::SetLineColour(const MHColour &colour, MHEngine *)
     m_picture->SetLineColour(GetColour(m_LineColour));
 }
 
-void MHDynamicLineArt::SetLineWidth(int nWidth)
+void MHDynamicLineArt::SetLineWidth(int nWidth, MHEngine *)
 {
     m_nLineWidth = nWidth;
     m_picture->SetLineSize(m_nLineWidth);
 }
 
 // We don't actually use this at the moment.
-void MHDynamicLineArt::SetLineStyle(int nStyle)
+void MHDynamicLineArt::SetLineStyle(int nStyle, MHEngine *)
 {
     m_LineStyle = nStyle;
 }
diff --git a/mythtv/libs/libmythfreemheg/DynamicLineArt.h b/mythtv/libs/libmythfreemheg/DynamicLineArt.h
index af772c14e76..bfb65e7d0e0 100644
--- a/mythtv/libs/libmythfreemheg/DynamicLineArt.h
+++ b/mythtv/libs/libmythfreemheg/DynamicLineArt.h
@@ -52,8 +52,8 @@ class MHDynamicLineArt : public MHLineArt
     // These actions set the properties for subsequent drawing but don't affect anything drawn so far.
     virtual void SetFillColour(const MHColour &colour, MHEngine *);
     virtual void SetLineColour(const MHColour &colour, MHEngine *);
-    virtual void SetLineWidth(int nWidth);
-    virtual void SetLineStyle(int nStyle);
+    virtual void SetLineWidth(int nWidth, MHEngine *);
+    virtual void SetLineStyle(int nStyle, MHEngine *);
 
     virtual void GetLineWidth(MHRoot *pResult) { pResult->SetVariableValue(m_nLineWidth); }
     virtual void GetLineStyle(MHRoot *pResult) { pResult->SetVariableValue(m_LineStyle); }