diff --git a/include/mapnik/marker.hpp b/include/mapnik/marker.hpp
index 571180ecd..257c597cb 100644
--- a/include/mapnik/marker.hpp
+++ b/include/mapnik/marker.hpp
@@ -84,7 +84,7 @@ public:
         if (is_bitmap())
             return (*bitmap_data_)->width();
         else if (is_vector())
-            return (*vector_data_)->bounding_box().width();
+            return static_cast<unsigned>((*vector_data_)->bounding_box().width());
         return 0;
     }
     inline unsigned height() const
@@ -92,7 +92,7 @@ public:
         if (is_bitmap())
             return (*bitmap_data_)->height();
         else if (is_vector())
-            return (*vector_data_)->bounding_box().height();
+            return static_cast<unsigned>((*vector_data_)->bounding_box().height());
         return 0;
     }
 
diff --git a/include/mapnik/markers_placement.hpp b/include/mapnik/markers_placement.hpp
index 259fd4ae4..b69ef1dd5 100644
--- a/include/mapnik/markers_placement.hpp
+++ b/include/mapnik/markers_placement.hpp
@@ -106,7 +106,7 @@ template <typename Locator, typename Detector> double markers_placement<Locator,
         }
     }
     unsigned points = round(length / s);
-    if (points == 0) return 0; //Path to short
+    if (points == 0) return 0.0; //Path to short
     return length / points;
 }
 
diff --git a/include/mapnik/svg/svg_renderer.hpp b/include/mapnik/svg/svg_renderer.hpp
index 4ffe11cd3..50260fc0a 100644
--- a/include/mapnik/svg/svg_renderer.hpp
+++ b/include/mapnik/svg/svg_renderer.hpp
@@ -86,7 +86,7 @@ public:
             u = 0;
         else if (u > 1)
             u = 1;
-        return u*d;
+        return static_cast<int>(u*d);
     }
 private:
     double x1_;
diff --git a/src/text_symbolizer.cpp b/src/text_symbolizer.cpp
index db0e86261..00a91401d 100644
--- a/src/text_symbolizer.cpp
+++ b/src/text_symbolizer.cpp
@@ -105,7 +105,7 @@ text_symbolizer::text_symbolizer(expression_ptr name, std::string const& face_na
       max_char_angle_delta_(22.5 * M_PI/180.0),
       fill_(fill),
       halo_fill_(color(255,255,255)),
-      halo_radius_(0),
+      halo_radius_(0.0),
       label_p_(POINT_PLACEMENT),
       anchor_(0.0,0.5),
       avoid_edges_(false),
@@ -138,7 +138,7 @@ text_symbolizer::text_symbolizer(expression_ptr name, float size, color const& f
       max_char_angle_delta_(22.5 * M_PI/180.0),
       fill_(fill),
       halo_fill_(color(255,255,255)),
-      halo_radius_(0),
+      halo_radius_(0.0),
       label_p_(POINT_PLACEMENT),
       anchor_(0.0,0.5),
       avoid_edges_(false),