diff --git a/src/agg/process_shield_symbolizer.cpp b/src/agg/process_shield_symbolizer.cpp
index 6cf975964..b2e1e4278 100644
--- a/src/agg/process_shield_symbolizer.cpp
+++ b/src/agg/process_shield_symbolizer.cpp
@@ -346,8 +346,8 @@ void  agg_renderer<T>::process(shield_symbolizer const& sym,
                                         // remove displacement from image label
                                         double lx = x - boost::get<0>(pos);
                                         double ly = y - boost::get<1>(pos);
-                                        px=int(floor(lx - (0.5 * w))) + 1;
-                                        py=int(floor(ly - (0.5 * h))) + 1;
+                                        px=int(floor(lx - (0.5 * w)));
+                                        py=int(floor(ly - (0.5 * h)));
                                         label_ext.init( floor(lx - 0.5 * w), floor(ly - 0.5 * h), ceil (lx + 0.5 * w), ceil (ly + 0.5 * h) );
                                     }
                                     else
@@ -387,8 +387,8 @@ void  agg_renderer<T>::process(shield_symbolizer const& sym,
                                 
                                 double lx = x - boost::get<0>(pos);
                                 double ly = y - boost::get<1>(pos);
-                                int px=int(floor(lx - (0.5*w))) + 1;
-                                int py=int(floor(ly - (0.5*h))) + 1;
+                                int px=int(floor(lx - (0.5*w)));
+                                int py=int(floor(ly - (0.5*h)));
                                 
                                 pixmap_.set_rectangle_alpha(px,py,*(*data));
                                 if (writer.first) writer.first->add_box(box2d<double>(px,py,px+w,py+h), feature, t_, writer.second);