diff --git a/src/common/dcsvg.cpp b/src/common/dcsvg.cpp
index 0fc94d97de..5b1bdcbb69 100644
--- a/src/common/dcsvg.cpp
+++ b/src/common/dcsvg.cpp
@@ -607,7 +607,7 @@ void wxSVGFileDC::ComputeScaleAndOrigin()
 }
 
 
-int wxSVGFileDC::GetMapMode()
+int wxSVGFileDC::GetMapMode() const
 {
     return m_mappingMode ;
 }