diff --git a/AUTHORS b/AUTHORS
index 8e2b101c3..2f8b43499 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -28,6 +28,7 @@ Patches
  - Krzysztof Godlewski
  - Beau Gunderson
  - John Hague
+ - Dennis Luxen
  - Tom MacWright
  - Dražen Odobašić
  - Martijn van Oosterhout
diff --git a/include/mapnik/map.hpp b/include/mapnik/map.hpp
index 9a7e95f05..54973e2c4 100644
--- a/include/mapnik/map.hpp
+++ b/include/mapnik/map.hpp
@@ -348,7 +348,7 @@ namespace mapnik
         ~Map();
 
         inline void setAspectFixMode(aspect_fix_mode afm) { aspectFixMode_ = afm; }
-        inline aspect_fix_mode getAspectFixMode() { return aspectFixMode_; }
+        inline aspect_fix_mode getAspectFixMode() const { return aspectFixMode_; }
 
     private:
         void fixAspectRatio();