diff --git a/python/Jamfile b/python/Jamfile
index 37691a094..4f5514526 100644
--- a/python/Jamfile
+++ b/python/Jamfile
@@ -12,7 +12,7 @@ extension mapnik
   # requirements and dependencies for Boost.Python extensions
   <template>@boost/libs/python/build/extension
 :  # path to mapnik include dir e.g. 
-  <include>$(MAPNIK_ROOT)/include
+  <include>$(MAPNIK_DIR)/include
    # path to libmapnik.so e.g.
-  <library-file>$(MAPNIK_ROOT)/lib/libmapnik.so
+  <library-file>$(MAPNIK_DIR)/lib/libmapnik.so
 ;
diff --git a/python/Jamrules b/python/Jamrules
index e39e6b9cc..058cf248a 100644
--- a/python/Jamrules
+++ b/python/Jamrules
@@ -2,4 +2,4 @@ path-global BOOST_ROOT : /opt/boost ;
 PYTHON_VERSION = 2.4 ;
 PYTHON_ROOT = /opt/python ;
 project boost : $(BOOST_ROOT) ;
-path-global MAPNIK_ROOT : /opt/mapnik ;
+path-global MAPNIK_DIR : /opt/mapnik ;