diff --git a/src/cairo_renderer.cpp b/src/cairo_renderer.cpp
index 41ad3fb0f..1eaaf500e 100644
--- a/src/cairo_renderer.cpp
+++ b/src/cairo_renderer.cpp
@@ -151,15 +151,15 @@ class cairo_gradient : private mapnik::noncopyable
 public:
     cairo_gradient(const mapnik::gradient &grad, double opacity=1.0)
     {
-        double x1,x2,y1,y2,r;
-        grad.get_control_points(x1,y1,x2,y2,r);
+        double x1,x2,y1,y2,rad;
+        grad.get_control_points(x1,y1,x2,y2,rad);
         if (grad.get_gradient_type() == LINEAR)
         {
             pattern_ = Cairo::LinearGradient::create(x1, y1, x2, y2);
         }
         else if (grad.get_gradient_type() == RADIAL)
         {
-            pattern_ = Cairo::RadialGradient::create(x1, y1, 0, x2, y2, r);
+            pattern_ = Cairo::RadialGradient::create(x1, y1, 0, x2, y2, rad);
         }
 
         units_ = grad.get_units();
@@ -1762,10 +1762,10 @@ void cairo_renderer_base::process(markers_symbolizer const& sym,
                     bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym);
                     agg::trans_affine marker_tr = agg::trans_affine_scaling(scale_factor_);
                     evaluate_transform(marker_tr, feature, sym.get_image_transform());
-                    box2d<double> bbox = marker_ellipse.bounding_box();
+                    box2d<double> new_bbox = marker_ellipse.bounding_box();
 
                     dispatch_type dispatch(context, marker_ellipse, result?attributes:(*stock_vector_marker)->attributes(),
-                                           *detector_, sym, bbox, marker_tr, scale_factor_);
+                                           *detector_, sym, new_bbox, marker_tr, scale_factor_);
                     vertex_converter<box2d<double>, dispatch_type, markers_symbolizer,
                                      CoordTransform, proj_transform, agg::trans_affine, conv_types>
                         converter(query_extent_, dispatch, sym, t_, prj_trans, marker_tr, scale_factor_);