diff --git a/chart2/source/view/main/OpenGLRender.hxx b/chart2/source/view/main/OpenGLRender.hxx
index 8bcfc87559d7..09e0778e7995 100755
--- a/chart2/source/view/main/OpenGLRender.hxx
+++ b/chart2/source/view/main/OpenGLRender.hxx
@@ -122,6 +122,14 @@ struct GLWindow
 #if defined( _WIN32 )
 #elif defined( MACOSX )
 #elif defined( UNX )
+        dpy(NULL),
+        screen(0),
+        win(0),
+#if defined( GLX_VERSION_1_3 ) && defined( GLX_EXT_texture_from_pixmap )
+        fbc(0),
+#endif
+        vi(NULL),
+        ctx(0),
         GLXExtensions(NULL),
 #endif
         bpp(0),