diff --git a/bindings/python/mapnik_line_symbolizer.cpp b/bindings/python/mapnik_line_symbolizer.cpp
index 062d52618..9c7053b90 100644
--- a/bindings/python/mapnik_line_symbolizer.cpp
+++ b/bindings/python/mapnik_line_symbolizer.cpp
@@ -62,5 +62,9 @@ void export_line_symbolizer()
                       (&line_symbolizer::get_stroke,
                        return_value_policy<copy_const_reference>()),
                       &line_symbolizer::set_stroke)
+        .add_property("smooth",
+                      &line_symbolizer::smooth,
+                      &line_symbolizer::set_smooth,
+                      "smooth value (0..1.0)")
         ;
 }
diff --git a/include/mapnik/line_symbolizer.hpp b/include/mapnik/line_symbolizer.hpp
index 84c845098..bcb3ab971 100644
--- a/include/mapnik/line_symbolizer.hpp
+++ b/include/mapnik/line_symbolizer.hpp
@@ -44,17 +44,20 @@ struct MAPNIK_DECL line_symbolizer : public symbolizer_base
     explicit line_symbolizer()
         : symbolizer_base(),
         stroke_(),
-        rasterizer_p_(RASTERIZER_FULL) {}
+        rasterizer_p_(RASTERIZER_FULL),
+        smooth_(0.0) {}
 
     line_symbolizer(stroke const& stroke)
         : symbolizer_base(),
         stroke_(stroke),
-        rasterizer_p_(RASTERIZER_FULL) {}
+        rasterizer_p_(RASTERIZER_FULL),
+        smooth_(0.0) {}
 
     line_symbolizer(color const& pen,float width=1.0)
         : symbolizer_base(),
         stroke_(pen,width),
-        rasterizer_p_(RASTERIZER_FULL) {}
+        rasterizer_p_(RASTERIZER_FULL),
+        smooth_(0.0) {}
 
     stroke const& get_stroke() const
     {
@@ -76,9 +79,20 @@ struct MAPNIK_DECL line_symbolizer : public symbolizer_base
         return rasterizer_p_;
     }
 
+    void set_smooth(double smooth)
+    {
+        smooth_ = smooth;
+    }
+    
+    double smooth() const
+    {
+        return smooth_;
+    }
+    
 private:
     stroke stroke_;
     line_rasterizer_e rasterizer_p_;
+    double smooth_;
 };
 }
 
diff --git a/src/agg/process_line_symbolizer.cpp b/src/agg/process_line_symbolizer.cpp
index cc00d2f2e..d07f47a28 100644
--- a/src/agg/process_line_symbolizer.cpp
+++ b/src/agg/process_line_symbolizer.cpp
@@ -40,7 +40,7 @@
 #include "agg_renderer_outline_aa.h"
 #include "agg_rasterizer_outline_aa.h"
 #include "agg_conv_clip_polyline.h"
-
+#include "agg_conv_smooth_poly1.h"
 // stl
 #include <string>
 
@@ -105,8 +105,6 @@ void agg_renderer<T>::process(line_symbolizer const& sym,
 
         set_gamma_method(stroke_, ras_ptr);
         
-        
-
         //metawriter_with_properties writer = sym.get_metawriter();
         for (unsigned i=0;i<feature->num_geometries();++i)
         {
@@ -137,14 +135,35 @@ void agg_renderer<T>::process(line_symbolizer const& sym,
                 }
                 else
                 {
-                    clipped_geometry_type clipped(geom);
-                    clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy());
-                    path_type path(t_,clipped,prj_trans);
-                    agg::conv_stroke<path_type> stroke(path);
-                    set_join_caps(stroke_,stroke);
-                    stroke.generator().miter_limit(4.0);
-                    stroke.generator().width(stroke_.get_width() * scale_factor_);
-                    ras_ptr->add_path(stroke);
+                    if (sym.smooth() > 0.0)
+                    {
+                        typedef agg::conv_clip_polyline<geometry_type> clipped_geometry_type;
+                        typedef coord_transform2<CoordTransform,clipped_geometry_type> path_type;
+                        typedef agg::conv_smooth_poly1_curve<path_type> smooth_type;
+                        clipped_geometry_type clipped(geom);
+                        clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy());
+                        path_type path(t_,clipped,prj_trans);
+                        smooth_type smooth(path);
+                        smooth.smooth_value(sym.smooth());
+                        agg::conv_stroke<smooth_type> stroke(smooth);
+                        set_join_caps(stroke_,stroke);
+                        stroke.generator().miter_limit(4.0);
+                        stroke.generator().width(stroke_.get_width() * scale_factor_);
+                        ras_ptr->add_path(stroke);
+                    }
+                    else
+                    {
+                        typedef agg::conv_clip_polyline<geometry_type> clipped_geometry_type;
+                        typedef coord_transform2<CoordTransform,clipped_geometry_type> path_type;
+                        clipped_geometry_type clipped(geom);
+                        clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy());
+                        path_type path(t_,clipped,prj_trans);
+                        agg::conv_stroke<path_type> stroke(path);
+                        set_join_caps(stroke_,stroke);
+                        stroke.generator().miter_limit(4.0);
+                        stroke.generator().width(stroke_.get_width() * scale_factor_);
+                        ras_ptr->add_path(stroke);                        
+                    }
                     //if (writer.first) writer.first->add_line(path, *feature, t_, writer.second);
                 }
             }
diff --git a/src/load_map.cpp b/src/load_map.cpp
index 92787c83e..354817a36 100644
--- a/src/load_map.cpp
+++ b/src/load_map.cpp
@@ -1266,7 +1266,10 @@ void map_parser::parse_line_symbolizer( rule & rule, xml_node const & sym )
         line_rasterizer_e rasterizer = sym.get_attr<line_rasterizer_e>("rasterizer", RASTERIZER_FULL);
         //optional<line_rasterizer_e> rasterizer_method = sym.get_opt_attr<line_rasterizer_e>("full");
         symbol.set_rasterizer(rasterizer);
-
+        // smooth value
+        optional<double> smooth = sym.get_opt_attr<double>("smooth");
+        if (smooth) symbol.set_smooth(*smooth);
+        // meta-writer
         parse_metawriter_in_symbolizer(symbol, sym);
         rule.append(symbol);
     }
diff --git a/src/save_map.cpp b/src/save_map.cpp
index d81508ad3..a890973ce 100644
--- a/src/save_map.cpp
+++ b/src/save_map.cpp
@@ -91,8 +91,12 @@ public:
         {
             set_attr( sym_node, "rasterizer", sym.get_rasterizer() );
         }
+        if ( sym.smooth() != dfl.smooth() || explicit_defaults_ )
+        {
+            set_attr( sym_node, "smooth", sym.smooth() );
+        }
     }
-
+    
     void operator () ( line_pattern_symbolizer const& sym )
     {
         ptree & sym_node = rule_.push_back(