diff --git a/src/common/dcgraph.cpp b/src/common/dcgraph.cpp
index c945600de4..d39eec3217 100644
--- a/src/common/dcgraph.cpp
+++ b/src/common/dcgraph.cpp
@@ -114,6 +114,7 @@ wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxWindowDC& dc ) :
 {
     Init();
     SetGraphicsContext( wxGraphicsContext::Create(dc) );
+    m_window = dc.GetWindow();
 }
 
 wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc ) :