diff --git a/SConstruct b/SConstruct
index 0e4cddb9e..0fc28fba3 100644
--- a/SConstruct
+++ b/SConstruct
@@ -167,7 +167,7 @@ opts.AddVariables(
     PathVariable('PYTHON','Full path to Python executable used to build bindings', sys.executable),
     BoolVariable('FRAMEWORK_PYTHON', 'Link against Framework Python on Mac OS X', 'True'),
     PathVariable('FRAMEWORK_SEARCH_PATH','Top framework search path on Mac OS X', '/'),
-    BoolVariable('FULL_LIB_PATH', 'Use the full path for the libmapnik.dylib "install_name" when linking on Mac OS X', 'False'),
+    BoolVariable('FULL_LIB_PATH', 'Use the full path for the libmapnik.dylib "install_name" when linking on Mac OS X', 'True'),
     ListVariable('BINDINGS','Language bindings to build','all',['python']),
     EnumVariable('THREADING','Set threading support','multi', ['multi','single']),
     EnumVariable('XMLPARSER','Set xml parser ','libxml2', ['tinyxml','spirit','libxml2']),