diff --git a/contrib/src/ogl/basic.cpp b/contrib/src/ogl/basic.cpp
index dc37563099..0a85bbb517 100644
--- a/contrib/src/ogl/basic.cpp
+++ b/contrib/src/ogl/basic.cpp
@@ -338,6 +338,11 @@ wxShape::~wxShape()
   if (m_canvas)
     m_canvas->RemoveShape(this);
 
+  if (m_clientData) {
+      delete m_clientData;
+      m_clientData = NULL;
+  }
+
   GetEventHandler()->OnDelete();
 }